mcalus

iTrader: (14)

Well I just recently purchased a 99 Z28, M6, 69,xxx. I have no idea what kind of oil I should put in it. I HAVE searched and read a ton of threads on Mobil 1, Castrol Syntec, Royal Purple, Pennzoil Platinum. Well I dont know if I should put 10w30 or 5w30, because I have put 10w30 in just about every car I have owned. What do you personally suggest.

This will be my daily driver.

Thanks!

-98-Z28-Darkness-

iTrader: (7)

Good luck..go with any of those....there all about the same it wont really matter...
ill go with mobil, castrol or royal, just think that royal is overpriced. Ill go with mobil.

foreverzero

iTrader: (5)

well if you looked down two threads you would have seen this one
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/869134-5w-30-10w-30-oil.html

180ls1

iTrader: (4)

germal castrol or pennzoil platinum

FMX05

iTrader: (3)

+1

mcalus

iTrader: (14)

Hey! Thanks! I read that one...well not all of it but it didn't really say much between 10w30 and 5w30, it was just a big which oil to pick thread!

super_fro_daddy

iTrader: (29)

BOB KNOWS HIS OIL

GinoLS1

iTrader: (1)

Go with 5W30

jwindbigler

iTrader: (20)

Mobile 1 and mobile oil filter

tennz28

Royal Purple 5w30 + K&N Filter FTW

THENASCAR

iTrader: (19)

mobile 1.

LS1 Terror

mobil 1 and a ac delco filter is the way to fly

mcalus

iTrader: (14)

For you Mobile 1 guys, 5w30 or 10w30? How many miles are on your cars?

jwindbigler

iTrader: (20)

For Michigan, run 10W-30. If you were in a warmer climate then you can use 5W-30. But since we have snow up in Michigan, stick with 10W-30. I have 27K on mine. I changed power plants in it 10K ago. I have been feeding it mobile 1 ever since. For your car, buy synthetic. It will help prolong the life of that beast.

bigleman

iTrader: (1)

i switched from mobile 1 to GC and have seen much more consistant oil preasures

xEzekial

dont buy into the oil debate, unless your car only sees track passes, who cares. just run whatever is best for your climate. use lighter weight oil for a colder region. use heavier stuff for warmer places. change it at 3k miles along with the filter, make sure to use synthetic oil (mobil 1, syntec, pennzoil platinum, etc.) and you will be fine.

waldershrek

iTrader: (1)

Somebody get the infraction hammer

DWZ28

Personally i use 0W-40 but only 50,000 miles
a buddy of mine uses the same and has a little over 100,000 with no problems

86berger2002

i would go mobil 1 10w30... thats what I run in the colder months in northern Indiana. Car seems to run a little smoother.

Smokin00WS6

iTrader: (4)

same here. I see no need to use anything other than 5w30