Ok all, I am planning on doing my first oil change on the Z28. Car has 27K miles on it, and I am not sure what type of oil I should put in there. I am thinking about putting synthetic in there, but am open to suggestions. Thanks!

 

The oil has been changed in the car before right!??

Mobil 1 syn is what I use

 

lol yes its been changed before, this is just the first oil change that I have had to do to it.

 

GC German Castorl 0-30W...One of the best oils for lt1/ls1 cars.

 

If you can't find GC, M1 0w-40 synth is a good second choice.

 

M1 5W-30 is all that goes in mine.

 

I use Pennzoil Platinum full syn in my LS1. I have used conventional oil in my third-gen every since I have owned it, which goes clear back to 99. I beleive synthetics are better, but in some cases, especially on a lightly stressed engine, it can be overkill. People will probably disagree, but I just simply can't complain about regular oil, when changed regularly.

 

5w30 castrol gtx

 

Castrol has another Syntec that is as good or better than the rare GC. look on the front of the bottle, it will say it meets european specs, those words are in a yellow box on the front. afaik, this full syn is very commonly available at AZ, and probably other retailers.

 

I only use the Mobil 1 synthetic as well, but I hear constant good things about the Castrol oil.

 

You dont' want to use GTX thats not syn....

Use some good syntechic. Royal purperl,amsoil,redline,GC etyc etc