How often do you change YOUR oil??

I plan on keeping my 4Runner for a very long time so I change my oil about every 5k. When I do change it I have them put in 6qt. I fill the remainder 0.6qt with Marvel Mystery Oil or Lucas.

About every 3rd or 4th oil change I use a engine flush. This is the stuff you put in your engine just before a oil change. It’s supposed to break up the sludge so you can drain it all out when you do the oil change. I put it in at the oil changing place, let it idle for 5 min then change the oil.
 
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I plan on keeping my 4Runner for a very long time so I change my oil about every 5k. When I do change it I have them put in 6qt. I fill the remainder 0.6qt with Marvel Mystery Oil or Lucas.

About every 3rd or 4th oil change I use a engine flush. This is the stuff you put in your engine just before a oil change. I put it in at the oil changing place, let it idle for 5 min then change the oil.

Back in college in the early 1980s I took an engine rebuilding class. The professor said he ran a quart of ATF in his engine every once in a while to flush things out. I wonder if ATF is similar to "engine flush"?
 
12 months or about 3,000 miles a year. Per the manufacturers maintenance requirements.


Toyota has a history of oil sludge issues across many of its motors including occasionally the 4.0 V6. Toyota does appear to have addressed these issues, but extended oil changes over a long period of time doesn't help things at, regardless of engine. Most every tech and oil engineer would tell you to change the oil before 10K miles as the oil is likely out of grade and the potential exists for varnishing and sludge build up on the valvetrain.

As noted previously, my primary concern is the oil falling out of grade. If you do a lot of short distance driving (i.e. 15 mile or less), then fuel will build up in the oil as the oil rarely gets up to operating temp, thus the oil will degrade more quickly and fall out of grade. I've done used oil analysis on my 2016 BMW M235 with a 7 QT capacity running a very high quality and robust synthetic 0W-30. I've got three rounds of data that supports that shows the oil falls out of grade at ~7,500 miles.


Given the 4Runner's rather large capacity of 6.6 QTs though running a rather thin 0W-20, I would expect the oil will indicate that a 5,000-7,500 mile oil change would be recommended and the 10K is too long, especially if you do a lot of short distance driving and lots of stone cold starts in the winter

If you do a lot of short trips which gets fuel in the oil, your probably not getting 7500 miles a year. Which is probably why Toyoata says every 10,000 miles or every 12 months.

Also water vapor mixing with the oil can help cause sludge too, highly reccommend a catch can for those doing a lot of short driving trips.
 
with Mobile1, the 'high mileage' stuff with the 15k markings...

every 10K like clockwork.


on my 2014 SR5 with 144k on the clocks...its never had anything other than that in the cases...mild off roading, towing in the summertime, winter driving of course, mostly sits during the summertime months (motorcyclist here)...seems to work just fine for me
 
Im old school. Changed after the first 1K, (to clear any metal shavings) then 3K (again, just clearing out any new, break-in material in the oil), then 5K. Changing every 5k thereafter. While wasteful to change more frequently than recommended, it doesn’t harm anything.
 
Yup... like you I'm an old-fashioned guy.

Early on, metal shavings out. Then decent synthetic every 4 to 5K.
Pull the dipstick... oil dark ? Rub it between fingers... still slick or not ?
 
Engine oil change interval

I am old school too. First at 1,500 miles and had the mechanic save first catch oil out drain in a clear wide mouth jar and shockingly oil was black!
I saved the jar for a few months before draining it into a 5 Qt. Jug for disposal at auto parts store.
The black grit in the bottom of the jar was the second shock.
Now I change every 5000 or so with synthetic and rotate tires -cross front to rear. Rear straight to front.
Hungryhawk
2017 SR5
 
From my understanding Engine Flush products have a lot more detergent and are much stronger than ATF fluid. Most recommend that you add it just before your oil change and let your engine idle for 5 min. If you do drive it only do it for a very short distance. It’s primarily designed to break down the sludge so you can drain it out with the oil change but the Car Care Nut guy said they are also good at removing residue that can cause piston rings to stick which can damage you piston side walls and cause more oil burn. However, he only recommends using them every 3rd oil change or greater because the detergent chemicals are harsh on o-rings and seal and can eat away at them if used too frequently, thus causing other problems.

As for ATF fluid, yes I remember my mechanic back in the day recommending adding AFT fluid about 300-50 miles before a oil change to get rid of your sludge and gunk build up. I think products like Marvel Mystery Oil performs somewhat the same way in that its designed to keep your engine clean and prevent sludge, carbon and gunk build up but doesn't have a mileage limit. You can simply add it with every oil change.
 
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From my understanding Engine Flush products have a lot more detergent and are much stronger than ATF fluid. Most recommend that you add it just before your oil change and let your engine idle for 5 min. If you do drive it only do it for a very short distance. It’s primarily designed to break down the sludge so you can drain it out with the oil change but the Car Care Nut guy said they are also good at removing residue that can cause piston rings to stick which can damage you piston side walls and cause more oil burn. However, he only recommends using them every 3rd oil change or greater because the detergent chemicals are harsh on o-rings and seal and can eat away at them if used too frequently, thus causing other problems.

As for ATF fluid, yes I remember my mechanic back in the day recommending adding AFT fluid about 300-50 miles before a oil change to get rid of your sludge and gunk build up. I think products like Marvel Mystery Oil performs somewhat the same way in that its designed to keep your engine clean and prevent sludge, carbon and gunk build up but doesn't have a mileage limit. You can simply add it with every oil change.


So, does that accomplish the same as running an engine flush from a bottle for a few minutes immediately prior to your next oil change?


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So, does that accomplish the same as running an engine flush from a bottle for a few minutes immediately prior to your next oil change?


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I would assume so but I think the engine flush is more aggressive in removing sludge and contaminates. Perhaps someone on this forum might have more knowledge on using ATF fluid compared to engine flush.
 
I just got my 2015 limited.

I know the maintenance light came one. I got the oil change done and I reset the message. Should I change it out every 5k or should I wait for the message to pop up again?

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I just got my 2015 limited.

I know the maintenance light came one. I got the oil change done and I reset the message. Should I change it out every 5k or should I wait for the message to pop up again?

Sent from my SM-G998U using Tapatalk

Not sure what mileage Toyota sets the light comes on at, but might be in the manual or someone here can chime in. I'm planning on changing it every 5,000 miles or once a year, whichever comes first.
I would just keep track of it with one of the Trip meters, or, occasionally check the sticker they put in the top left part of your windshield if the people that changed use those.
 
1st oil change was at 1500, 2nd was at 5k, every 5k from that point forward. May sound like an overkill, but I just don't see running up to 10k with a lot of city driving.

1st rear end oil change, 5k. Oil was black and thin and had a bit of metal debris on magnet. Looks like Toyota may have put in some sort of additive for break-in period. It was pretty nasty and smelled really bad.

My son works at a Toyota dealership and he changes my oil so I know its being done right.
 
1st oil change was at 1500, 2nd was at 5k, every 5k from that point forward. May sound like an overkill, but I just don't see running up to 10k with a lot of city driving.

1st rear end oil change, 5k. Oil was black and thin and had a bit of metal debris on magnet. Looks like Toyota may have put in some sort of additive for break-in period. It was pretty nasty and smelled really bad.

My son works at a Toyota dealership and he changes my oil so I know its being done right.


Overkill never killed a soul. Lack of maintenance, now… LOL


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I just got my 2015 limited.

I know the maintenance light came one. I got the oil change done and I reset the message. Should I change it out every 5k or should I wait for the message to pop up again?

Sent from my SM-G998U using Tapatalk

light comes on every 5k miles
 
Changed at below Odo:

3,882
11,844
19,498

So.. other than getting the break in metals out, I change every ~7,500 miles.

Didn’t do oil analysis on first change, but the next 2 came back with enough TBNs to have gone to 10k miles. Honestly it’s more a time thing and when I’m past 7,000 and a nice (not hot) day comes I just do it.
 

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