User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-13-2019, 06:33 PM #1
simple's Avatar
simple simple is offline
Senior Member
 
Join Date: Oct 2007
Location: SoCal
Posts: 1,776
simple will become famous soon enough
simple simple is offline
Senior Member
simple's Avatar
 
Join Date: Oct 2007
Location: SoCal
Posts: 1,776
simple will become famous soon enough
Coolant leak in oil?

Hey guys,

I recently did an oil analysis with black stone. I was running 5W-20 15k mi Mobil 1 synthetic on my 08 V6 with 130k. The oil had about 11-12k miles on it. The oil analysis came back as having developed a coolant leak, which the lab said is evident by sodium and potassium in the oil. I did another analysis about 6mo ago with a sample from the same oil as this sample but with only 5k mi on it. That first sample had 0 potassium and 10 sodium (not sure what those values indicate). This sample, which was a full oil change had 159 potassium and 39 sodium.

I also did a water pump replacement a few weeks ago. I didn’t think I had an issue with the pump but when I picked it up the shop showed me some crusty pink spots where it had started leaking. I used an OEM pump and gasket, but the shop used zerex coolant. A few days after, I noticed my coolant tank was almost empty. Figured the shop didn’t do a good job with the fill and I put more valvoline brand pink asian zerex coolant. I’ve since been on a 2k+ mi road trip and haven’t noticed any more coolant issues, still at the ‘F’ line since refilling it.

Got it, it’s a V6 so head gasket may be an issue. But it’s an 08, so hopefully not. My 04 had a head gasket leak and I feel like I was always putting coolant in the tank. I guess I’m wondering if during the water pump maintenance, oil could somehow have made its way into the oil supply?
__________________
Air 4rceRunner One, 04 Sr5

Last edited by simple; 08-13-2019 at 06:36 PM.
simple is offline   Reply With QuoteReply With Quote
Old 08-13-2019, 07:16 PM #2
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: Bluffton S.C.
Posts: 2,517
Real Name: Skip
AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: Bluffton S.C.
Posts: 2,517
Real Name: Skip
AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice
Not sure how they could of gotten coolant in the oil changing out the water pump, but since you haven't noticed any coolant lost after you fill it when you notice it was low I would wait and do another oil test at the next oil change time and see if you're still getting coolant in the oil.
__________________
2004 Limited V8
AuSeeker is offline   Reply With QuoteReply With Quote
Old 08-13-2019, 07:44 PM #3
waypoint's Avatar
waypoint waypoint is offline
Member
 
Join Date: Aug 2017
Posts: 348
waypoint will become famous soon enough waypoint will become famous soon enough
waypoint waypoint is offline
Member
waypoint's Avatar
 
Join Date: Aug 2017
Posts: 348
waypoint will become famous soon enough waypoint will become famous soon enough
When you installed the new water pump, did you use a torque wrench and tighten the bolts to spec? Or go by feel?

The large-head outer bolts pass through the timing cover, and seal the coolant passages against the timing cover. I can imagine improper tightening causing the inner timing cover seal to fail and leak coolant into the engine case.
waypoint is offline   Reply With QuoteReply With Quote
Old 08-13-2019, 10:38 PM #4
simple's Avatar
simple simple is offline
Senior Member
 
Join Date: Oct 2007
Location: SoCal
Posts: 1,776
simple will become famous soon enough
simple simple is offline
Senior Member
simple's Avatar
 
Join Date: Oct 2007
Location: SoCal
Posts: 1,776
simple will become famous soon enough
Quote:
Originally Posted by waypoint View Post
When you installed the new water pump, did you use a torque wrench and tighten the bolts to spec? Or go by feel?

The large-head outer bolts pass through the timing cover, and seal the coolant passages against the timing cover. I can imagine improper tightening causing the inner timing cover seal to fail and leak coolant into the engine case.
I used an independent but reputable shop to install it. I canít imagine they used a torque wrench. But who knows
__________________
Air 4rceRunner One, 04 Sr5
simple is offline   Reply With QuoteReply With Quote
Old 08-14-2019, 12:16 AM #5
Johns06yota's Avatar
Johns06yota Johns06yota is online now
Member
 
Join Date: Jan 2018
Location: North Carolina
Posts: 563
Real Name: John Iannacone
Johns06yota will become famous soon enough Johns06yota will become famous soon enough
MY GARAGE
Johns06yota Johns06yota is online now
Member
Johns06yota's Avatar
 
Join Date: Jan 2018
Location: North Carolina
Posts: 563
Real Name: John Iannacone
Johns06yota will become famous soon enough Johns06yota will become famous soon enough
MY GARAGE
Quote:
Originally Posted by simple View Post
Hey guys,

I recently did an oil analysis with black stone. I was running 5W-20 15k mi Mobil 1 synthetic on my 08 V6 with 130k. The oil had about 11-12k miles on it. The oil analysis came back as having developed a coolant leak, which the lab said is evident by sodium and potassium in the oil. I did another analysis about 6mo ago with a sample from the same oil as this sample but with only 5k mi on it. That first sample had 0 potassium and 10 sodium (not sure what those values indicate). This sample, which was a full oil change had 159 potassium and 39 sodium.

I also did a water pump replacement a few weeks ago. I didnít think I had an issue with the pump but when I picked it up the shop showed me some crusty pink spots where it had started leaking. I used an OEM pump and gasket, but the shop used zerex coolant. A few days after, I noticed my coolant tank was almost empty. Figured the shop didnít do a good job with the fill and I put more valvoline brand pink asian zerex coolant. Iíve since been on a 2k+ mi road trip and havenít noticed any more coolant issues, still at the ĎFí line since refilling it.

Got it, itís a V6 so head gasket may be an issue. But itís an 08, so hopefully not. My 04 had a head gasket leak and I feel like I was always putting coolant in the tank. I guess Iím wondering if during the water pump maintenance, oil could somehow have made its way into the oil supply?
I'm not sure as to the cause of there being contaminants in the oil but I will say that when I replaced my radiator, t-stat, and hoses I had mine at the fill line and several days later noticed it had gone down a lot. I ended up finding out it was just an air pocket that had worked its way out causing the coolant to drop. Since then (2 months later) after filling the reservoir back up I marked it and it has not gone down. This may be what you experienced.

On a side note, is it possible when you pulled the water pump that a small amount of coolant found its way into the timing cover?
__________________
__________________________________________________ ___
If you are looking for custom 4runner parts, then look no further!

iannaconeautoaccessories.com
Johns06yota is online now   Reply With QuoteReply With Quote
Old 08-14-2019, 08:23 AM #6
UrbanRunner651's Avatar
UrbanRunner651 UrbanRunner651 is offline
Member
 
Join Date: Aug 2017
Location: MN
Posts: 128
Real Name: Newell
UrbanRunner651 is on a distinguished road
MY GARAGE
UrbanRunner651 UrbanRunner651 is offline
Member
UrbanRunner651's Avatar
 
Join Date: Aug 2017
Location: MN
Posts: 128
Real Name: Newell
UrbanRunner651 is on a distinguished road
MY GARAGE
When did you start running the synthetic?
Others have mentioned making the switch led to premature failures/leaks.
UrbanRunner651 is offline   Reply With QuoteReply With Quote
Old 08-14-2019, 08:59 AM #7
waypoint's Avatar
waypoint waypoint is offline
Member
 
Join Date: Aug 2017
Posts: 348
waypoint will become famous soon enough waypoint will become famous soon enough
waypoint waypoint is offline
Member
waypoint's Avatar
 
Join Date: Aug 2017
Posts: 348
waypoint will become famous soon enough waypoint will become famous soon enough
Quote:
Originally Posted by simple View Post
I used an independent but reputable shop to install it. I canít imagine they used a torque wrench. But who knows
I suppose it's possible that a small amount coolant seeped into the timing cover area during the pump replacement. As AuSeeker mentioned, grab another oil specimen next change and have it analyzed.
waypoint is offline   Reply With QuoteReply With Quote
Old 08-14-2019, 10:59 AM #8
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 210
firebirdguy will become famous soon enough
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 210
firebirdguy will become famous soon enough
sorry i dont have any input on why coolant shows up in the oil analysis... but am curious why you run 5/20 weight oil when the V6 calls for 5/30? especially with 100k+ miles, the bearing clearances are bigger than when it was new so using a thinner oil may not be the best idea.
firebirdguy is offline   Reply With QuoteReply With Quote
Old 08-14-2019, 10:01 PM #9
simple's Avatar
simple simple is offline
Senior Member
 
Join Date: Oct 2007
Location: SoCal
Posts: 1,776
simple will become famous soon enough
simple simple is offline
Senior Member
simple's Avatar
 
Join Date: Oct 2007
Location: SoCal
Posts: 1,776
simple will become famous soon enough
Quote:
Originally Posted by UrbanRunner651 View Post
When did you start running the synthetic?
Others have mentioned making the switch led to premature failures/leaks.
I started synthetic when I got the truck at 110k. I don’t know what was used before, and it’s impossible to know if the owner had ever used synthetic or not. I think that cross over thing is an old wives tale. To each their own, but I have no worries with using synthetic good quality oil in my engine.

Quote:
Originally Posted by firebirdguy View Post
sorry i dont have any input on why coolant shows up in the oil analysis... but am curious why you run 5/20 weight oil when the V6 calls for 5/30? especially with 100k+ miles, the bearing clearances are bigger than when it was new so using a thinner oil may not be the best idea.
There was actually a TSB a long time ago which approved 5W-20 in our rigs. It was kind of confusing, because it read 06+, but the 03-05 have the same engine.

Ultimately, 5W-20 is easier to find, I track my mpg’s religiously and can’t say there’s been any change on gas mileage, but I do have multiple oil analysis pulls that say the engine is wearing fine.

4runnerclub.com/i/4r_files/fsm/ToyManuals-2007-4Runner/toyfsrm/toytsb/toytspdf/tsbrules/2007/eg018t06.pdf


Thanks for the advice everyone! I’ll do a pull in a few months and see where it goes.
__________________
Air 4rceRunner One, 04 Sr5
simple is offline   Reply With QuoteReply With Quote
Old 08-15-2019, 09:31 AM #10
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 210
firebirdguy will become famous soon enough
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 210
firebirdguy will become famous soon enough
yeah there are no issues at all to change to synthetic oil at any time after the engine is broken in.... or to change back & forth. synthetic oil will not cause any type of mechanical failure. it could possibly allow oil to leak if there were bad gaskets since it is thinner, but thats very rare if the engine is sealed up properly.

thanks for the info on the TSB for 5/20, was just curious why you used it vs 5/30. i think 5th gen runners call for 5/20 & it is the same engine... but maybe there were some minor internal changes with the 06+ engines, i know they changed the head gaskets, maybe they made a clearance change too. but either way sounds like its accep[table to use if you dont have any oil lights come on & the oil analysis comes back good.

Last edited by firebirdguy; 08-16-2019 at 11:05 AM.
firebirdguy is offline   Reply With QuoteReply With Quote
Old 08-15-2019, 06:08 PM #11
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: Bluffton S.C.
Posts: 2,517
Real Name: Skip
AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: Bluffton S.C.
Posts: 2,517
Real Name: Skip
AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice AuSeeker is just really nice
Quote:
Originally Posted by simple View Post
I started synthetic when I got the truck at 110k. I donít know what was used before, and itís impossible to know if the owner had ever used synthetic or not. I think that cross over thing is an old wives tale. To each their own, but I have no worries with using synthetic good quality oil in my engine.



There was actually a TSB a long time ago which approved 5W-20 in our rigs. It was kind of confusing, because it read 06+, but the 03-05 have the same engine.

Ultimately, 5W-20 is easier to find, I track my mpgís religiously and canít say thereís been any change on gas mileage, but I do have multiple oil analysis pulls that say the engine is wearing fine.

4runnerclub.com/i/4r_files/fsm/ToyManuals-2007-4Runner/toyfsrm/toytsb/toytspdf/tsbrules/2007/eg018t06.pdf


Thanks for the advice everyone! Iíll do a pull in a few months and see where it goes.
Quote:
Originally Posted by firebirdguy View Post
yeah there are no issues at all to change to synthetic oil at any time after the engine is broken in.... or to change back & forth. synthetic oil will not cause any type of mechanical failure. i could possibly allow oil to leak if there were bad gaskets since it is thinner, but thats very rare if the engine is sealed up properly.

thanks for teh info on the TSB for 5/20, was just curious why you used it vs 5/30. i think 5th gen runners call for 5/20 & it is the same engine... but maybe there were some minor internal changes with the 06+ engines, i know they changed the head gaskets, maybe they made a clearance change too. but either way sounds like its accep[table to use if you dont have any oil lights come on & the oil analysis comes back good.
While that TSB is all fine and good...for newer models, the TSB also had the following note...

"NOTE:
The recommended viscosity grade for this oil differs according to vehicle model.
Use the recommended grade specified on the oil filler cap or in the Repair Manual
or Ownerís Manual for each vehicle.
For Prius vehicles, refer to TSB No. EG050Ė04, ďEngine Oil Specifications"

....which tells me to use the oil recommended for my year model and what it say in the owner's manual/oil filler cap.
__________________
2004 Limited V8
AuSeeker is offline   Reply With QuoteReply With Quote
Reply

Tags
coolant , gasket , oil , pump , sample

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant Leak DanielMaat89 4th Gen T4Rs 1 01-07-2018 03:58 PM
rear coolant leak, NOT rear coolant bypass block... delgadog Classic T4Rs 11 06-13-2014 12:16 PM
Coolant leak solution, pepper, eggs or liquid aluminum stop leak? BUGSEY General Discussions 1 01-30-2014 01:32 PM
Coolant Leak- Drivers side coolant manifold? Shibby! 3rd gen T4Rs 19 12-28-2012 09:37 PM
Coolant leak, whining noise, vacuum leak, alternator, starter, battery issues Max O 3rd gen T4Rs 4 12-03-2009 10:31 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 12:52 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2019


Garage Plus vBulletin Plugins by Drive Thru Online, Inc.