Last night I made the mistake of putting Mobil Clean 5000 in my 4Runner, instead of full synthetic Mobil1. The truck only has 20k miles so the brief switch probably will do nothing. But, I'm not exactly an oil expert...

What would you guys do, run until the next oil change and not worry about it?

Or

Drain the dino and go back to synthetic?

On a sidenote, a 5qt jug of Clean 5000 is REALLY cheap!!! Maybe I should just run that anyway....

I am not familar with the Clean 5000, but if it says "Mobil 1" then it should be synthetic not dino oil. Anyway if it is just "Mobil" dino oil then it would be no problem to run it for a few thousand miles and then switch back to synthetic imo.

This is from:

http://www.mobil1.com/USA-English/Mo...AQs.aspx#FAQs1

Is Mobil Clean 5000 a synthetic oil or a synthetic blend?

Mobil Clean 5000 is not a synthetic or synthetic blend. While it does offer high performance, the base stock composition is non-synthetic.

I guess I added the "1" to Mobil, and this is just "Mobil". I had never heard of it either until yesterday. I've learned my lesson. Hopefully nobody else will make the same mistake when looking for synthetic...

You're better off changing oil of half the price twice as often - as long as it's API rated SM 5W-30.

Wont make a difference...

Mobil Clean is actually a pretty good Dino oil and wont hurt a thing.

You should have no problem just run the C-5K out and then switch.

On a side note my dad whould run what ever is the cheepest oil you could buy what ever was on sale in all his cars over the years and he ran them all well over 100K with no problems. The key was he always changed it at 3,000mi. (oil + Filter)

(Make sure it's on sale son) ............ "Ok dad"

If it were me I would drain it. I hated that Mobil 1 came out with all these new levels of dino oil. I no longer trust the service places to use real Mobil 1 synthetic as I've caught one trying to use the dino while charging for the synthetic. I do my own now. I bet lots of folks are getting taken on this one.

Bill3508

It won't hurt a thing.

As far as Mobil 1 being "fully synthetic", there have been some recent tests indicating that Mobil 1 is no longer using Group IV base stock for Mobil 1. So it all depends on what your definition of "synthetic" is.

Doesn't hurt a thing, you can change back&forth between full synthetic and natural oil every time. Mobil1 does make natural oils and full synthetics, that one is a natural oil.

This is from Mobiloil.com;

"Is Mobil Clean 5000 a synthetic oil or a synthetic blend?

Mobil Clean 5000 is not a synthetic or synthetic blend. While it does offer high performance, the base stock composition is non-synthetic. "

http://www.mobiloil.com/USA-English/...lean_5000.aspx

This isn't a slam on synthetic oils, but unless you plan on keeping your 4runner for 200K miles or beyond, you'll do just fine with dino or synthetic blend.

I have to agree, the choice is simple for me. I use 5W-30 dino oil via my local Toyota dealer. I used to religiously change the oil in all my vehicles but now I keep getting these coupons in the mail for a $25 lube/oil change from the Toyota dealer, which makes it very hard to refuse. They put in 5w-30 oil, change the oil filter, lube the driveshaft, check my fluids and even refill the windshield washer fluid, all for $25. I kept my 88

Im with you on this one some years ago a good friend who was a manager af a large construction co. here in my area told me after many years of testing the difference between dino oil and syn- in there fleet of many different rigs from bucket loaders to tractors to dump trucks to pick up trucks and extensive oil analysis they found no difference between running either type of oil in wear on the engine. This included complete tear down af many engines and compairing the parts when it was time to rebuild them. This by the way was a 15 year study the company did.

He did tell me the main difference in wear was between the trucks that they would switch between brands of oil (Mobil oil this oill change) (Castrol oil the next) etc. this test group had the most wear.

By the way he did say that all the oil filters were the same brand/make over the test to rule out one filter brand over the other.

I only run synthetic cuz I am on the road all the time and it's just saves me time extending my oil chang int. I run the oil and filter to 6k. Not that you could do the same on dino oil as well. But I always run the same brand of oil. Will it matter in the long run ??? "who knows"

[QUOTE]Originally posted by biglatka
[B]With hindsight it didn

Yeah, that's probably all true, but I don't even do my own changes anymore, unless my dealer stops these oil change specials. I guess I could bring my own oil and although I think my dealer is pretty honest as far as dealers go I would always be wondering if he used his own oil and kept mine . You have a good point there, but there is also that school of thought that says it is better, more important, to change the oil frequently (3-5k) rather than what type of oil you use and extending oil changes to 10-15k (within reason of course).

I've also heard what a previous poster said about how detrimental it is to switch and/or mix different brands and grades of oil. This was from an aircraft mechanic who also saw evidence by tearing down aircraft engines. He compared the engines of those who stayed local and thus used the same brand/grade of oil vs. those who were continually flying into different airports and using the services there and hence mixing different type and brand oils.

The T4R manual recommends every 7.5k, in my previous Tundra with synthetic I usually went every 10k+ or 1 to 2 times per year. I don't do my own oil changes either. My Mobil 1 comes from Wal-Mart and for $10 I take it to a trusted local independent mechanic that was a former Lexus master tech who does the change along with air/oil filters and other fluids.

Have you ever been to http://www.bobistheoilguy.com/ ?