R&L's C6

OK, another oil question and thought I would ask the guys I trust the most about this kinda stuff. Since I have gotten use to using full synthetic oil in the Corvette, I was thinking about using full synthetic in our daily drivers. Are there any negative consequences changing to a full synthetic oil on engines that have been using a synthetic blend?

Thanking you in advance..

adrnln1

No issue going from blend to full, but you can't go back.

Ramblin On

I went that route (blend to fully synthetic) and have no regrets but that I did not do it sooner. I take longer intervals between changes which helps defray the additional cost of full synthetic. (I believe you could go back to a blend if you really wanted to, but why?)

KX

No where have I ever heard that you cannot go back to dino oil!? Any truth to that or is it a wives tale?

Rocketmanwpb

You get the benefit of longer durations between oil changes. You can go back and forth between the oils and even blend them with no ill effects. If you blend them you will suffer shorter durations between changes.

dvilin

Wives tale.

johnodrake

see Bob's the Oil Guy

calemasters

I have four (4) GM cars, including the C6, which all require SAE 5w-30 engine oil. The C6 is the only car that requires Mobile 1 synthetic. I made the decision years ago to use Mobil 1 5w-30 in all of my vehicles. This way it keeps it simple, as I only have to stock one type of oil. I believe it is one of the best engine oils on the market.

It turns out, that using Mobil 1 in my daughter's 2.4 L Ecotec Chevrolet Colbalt is a good thing, because she likes to ignore the "Change Oil Soon" message. I think Mobil 1 gives the engine a little bit of an "edge" for when she goes into overtime.

Kvothe

I recall hearing somewhere that if you break an engine in with synthetic you shouldn't change to non-synthetic but if you start off with non then you can go back and forth should you choose. Not sure if that is another wives tale or not.

johnodrake

See post 6.

j_digi454

Mad*Max

you can actually use any synthetic which meets the GM4718 standard

R&L's C6

Whitey, my little Ford Ranger, now has Corvette blood in him (Mobil 1)

Since it has no oil life monitor, would the same oil change intervals apply of about 7500 miles or once a year with the Mobil 1?

To keep this thread C6 related, had to move my car out of the garage to change oil on my truck. Took a pic, I thought it looked pretty good parked safely out in the yard.

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carpe dm

It should not be a problem, unless they are quite old. I have used Mobil 1 in all our cars for thirty years. The only potential problem would come with seals/gaskets that are old and dependent on non-synthetic oil to have them "swell" into place.