F8L LT1 Z28

What oil is in your LT1

fastbird96

iTrader: (1)

Mine has never had anything but Mobil 1

fnslowZ

Did they come from the factory with Mobil 1?

nychucky

Valvoline Synpower 5w30 runs very well in mine. The Oil pressure gauge smooths out. With Conventional it tended to jump a little bit by a couple of pounds at idle. I sometimes use a synthetic additive like lucas but that is every couple of oil changes. Also, it helps with any sort of "tick" from valve train.

-Chuck

nomoneyz

iTrader: (15)

Regular castrol gtx high milage. non synthetic

fastbird96

iTrader: (1)

No


Ok, other than the original oil, it's only had mobil 1.

I8ASaleen

iTrader: (9)

Royal purple did well for the car at 100K! Could definitely feel the difference once I changed over and haven't gone back.

azmarkus

It's an LT1, I'm glad more stays in than out....most of the time.

fnslowZ

I did not mean that in a bad way, some one told me that they came with mobil 1

fnslowZ

burnzilla

iTrader: (3)

Same.
Mobil 1

GGPC

When they came out with the lt1 for the vette, They recommended mobil 1. And I think to this day its the offical oil for vette engines.

Blackbirdws6

iTrader: (7)

mobil 1

96lt1m6

iTrader: (31)

mobil 1

speed_demon24

iTrader: (6)

Mobil 1

z28hustle

you people break motors in with mobile 1 oil?

if so which one?

.. i have a motor that has never been started and wanna make sure everything is cool. its ben sitting a while.

UnitZ28

never use a synthetic oil for break in

transam5.7lt1

iTrader: (18)

75w140 in the old LT1!

95greenZ

iTrader: (2)

How long should you wait to change to synthetic on a fresh motor.

TwoFast4Lv

iTrader: (8)

I used to run Mobil 1. I still do in the wifes car.

Once I started running alot of juice I went to Royal Purple Raceing #51 or 20w-50