CHEVYPOWER96

im about to get my first oil change since owning the car,some say go synthetic and heard some say if you use sythetic you will see new leaks in gaskets because its real thin oil? i heard some people use mobile 1, can you guys please help me choose a good oil and something i can stick with for awhile my motor has around 181552 miles on it.

93 LT1 Vette

Is there an oil change sticker in the window? If so just continue with that oil. If not, there are many high mileage oils out there any of them work well. I'd be just as concerned with the cooling system since hot weather is just around the corner. Drain and flush, new thermostat and an aftermarket tune to bring the fans on at about 190 degrees.

Rob94hawk

iTrader: (1)

Right now I'm using Penzoil 5w-30 Ultra. When it was stock Redline 5w-30.

But since you're stock with high mileage save your pennies and put in a decent conventional dino grade. Just change it every 3000 miles.

CHEVYPOWER96

ok never thought to look for a sticker,since you brought up cooling what coolant i should use for these motors i seen on my coolant cap it says i reccomends special coolant? 180 thermostat right? and what do you mean by bring the fans on at 190??

VinR1

iTrader: (17)

Schaefer

93 LT1 Vette

180 will work fine.

Any modern coolant

In the summer here in Texas it gets hot. On my LT1 the first cooling fan came on at 228 degrees. Secondary at 238 degrees which is great for emissions but kills performance (and just plain bothers me seeing the water temp at 240) especially if your still running the coolant lines to your throttle body. To fix this you can bypass the TB and your ECM can be reprogrammed to bring the fans on much sooner.

I've got a 160 degree T/S and my tune brings the fans on at 190 degrees. So even when it is 100+ outside my coolant temp while cruising at 65mph stays about 185. In bumper traffic 195 to 200. Cooler is better in most cases.

CHEVYPOWER96

so i would have to take it to a programer to set it around 190 then?

CHEVYPOWER96

looked at the sticker it said oil grade syn/b

F0x Slaughter

The problem with high mileage oil is they have additives that cause the seals to swell to prevent leaking. If you run it all the time there have been cases of the seals failing from the additives.

CHEVYPOWER96

thats what iv heard about synthetic oils

93 LT1 Vette

Yep, synthetic blend and yes any mail order tuner can set the fans to come whenever. Good luck