tbird31

iTrader: (22)

Used Mobil 1 10W30 for the past few years, but since the car is strictly a weekend warrior now, I'm going to Amsoil.

quik95lt1

iTrader: (7)

I run that oil to keep the oil press up where it should be 25ish idle and 60 @ 8000............I built the motor clearanced loosely to keep a high volume of oil circulating through the bottom end and keep bearing temps down a bit as well......i know thats an old school frame of mind but it could have something to do with why my bearings look so good too .......i'm putting the Titan oil pump in it this go around with some other oil mod's hopefully i can still move the oil and have it drain back properly and maybe run a 15w40....we'll see.....

pillarpod

valvoline full synthetic 10w-30

carbonrex

castrol syntech

killagt

iTrader: (3)

wat ever as long it 5w-30 with wix/pureone oil filter and change every 3k miles.

Big Bad Bud

iTrader: (3)

I use Royal Purple 10/30

Wicked94Z

iTrader: (26)

What kinda clearances you got in that thing? Cuz mine is pretty loose and I'm seeing that sort of oil pressure HOT off the freeway at 3500+ rpm and I've got 10w30 in it... Makes me feel like running 0w30 in it now

Loose is fast enough if you don't have a lot of money for low tension rings, vacuum pumps, coated everything, etc........................

nascarnate326

iTrader: (1)

M1 5W-30 in my Camaro and Cobalt.

I only drive about 3k a summer in the Camaro so I do one oil change in the spring.

My cobalt gets about 10k per oil change, filter changed ever 5k.

LeonbergerG

iTrader: (2)

I use bradpenn oil. 20w50 in the race motors. 10w30 in the street motors. It has a great zinc content.

323steel36

mobil 5w-30 full synthetic. or castrol 5w-30 syntec. works well for me

z_speedfreak

iTrader: (3)

used to use M1 10w30, now that my motor is tightened up I switched to 5w30. I want to switch away from M1 but haven't figured out what to yet. the german castrol is really good but idk about running 0w30...
long time no see! didn't u make a thread about oil and how you get UOA's all the time?

egott_91

iTrader: (1)

Amsoil in the SS

Mobil1 in the Colorado.

stangkiller2005

iTrader: (15)

5w30 RP on this oil change. amsoil was out of the budget this time . -_- next oil change amsoil.

Fazz73jr

iTrader: (3)

15w40 rottela with a k&n filter in the camaro and Nova. Thinking about switching the camaro to 5w40 synthetic rottela. Anyone use that stuff?

quik95lt1

iTrader: (7)

its a little loose lol....... .0029 mains and .0030 rods

looks good after two years of constant 8000+rpm abuse though.......heres the thread i got going right now on the motor rebuild...

https://ls1tech.com/forums/lt1-lt4-m...ld-thread.html

lt4388stroker

iTrader: (14)

castrol syn 10-30