ittlfly

Hey guys...I'm helping a brother out here with his 93 LT-1 overheating problem (my LT-5 isn't the same animal)....which color antifreeze goes into the 93 LT-1 cars????
Thanks

navy_vette

Before you start swapping fluid colors, you should do a flush of the system. Possibly an acid flush, but I have never done one of these myself and I know some people feel that it can damage something. One of the reasons it might be overheating is a blockage in the system.

I honestly would suggest.....no coolant...

I used to have a slight overheating problem in the old L98. I used a product called Water Wetter. Just that and plain water. Distilled is best. It dropped my temps down by about 15 degrees on daily driving.

ittlfly

Thanks for the info. I plan on flushing his system first. I want to be sure which color is right for the car before I put in the new fluid....

pcolt94

I know for sure that up thru the 94 the green stuff goes in (as was the original coolant).

And I beleive 95 and up (I think) used the Dex-cool orange stuff.

Sidney004

ittlfly

Thanks again....green it is!!!!!

kimmer

One problem with that is your setting yourself up for some major rust problems.

92ragtop

Green + distilled water + Water Wetter works well for me.

PLRX

I use 1Gal of Dexcool, Water Wetter and Distilled Water. on both Vettes

WW7

I use the universal yellow coolent that can be mixed with any other coolant..Says on the bottle that its safe for use with aluminum. This is what I used for years and when the old motor was torn down there was no signs of any galvanic erossion or deterioration to the aluminum of any kind....WW

Strick

Hi Steve, stay with the green stuff and distilled water.

MrPhil

This antifreeze thing is a bag of worms. Here is what Prestone says about their green antifreeze on their website:

Prestone® Extended Life Antifreeze/Coolant is compatible with ANY antifreeze/ coolant – regardless of color – for use in ALL makes and models of cars and light duty trucks. This patented formula provides a high degree of performance durability and carefully balanced protection against temperature extremes and rust corrosion of all cooling system metals, including aluminum.

This says 'ALL' cars and includes aluminum. Prestone's Dex-Cool says to be use in cars that 'require' Dex-Cool. What happened to the 'all' cars statement for the green stuff?

engle1147

This bag-o-worms has been beaten to death - why post this info? The OP knew not to mix the flavors/colors...he just want to know what it supposed to be in a specific year.

MrPhil

Read the green print........... Prestone says you can mix their green antifreeze with any color you want. No problem. If that caused any harm to your cooling system they could be held liable and sued.

THE 383 admiral

your in cali forget the Glycol junk... the best coolant is distilled water with water wetter

H P Bushrod

These anti-freeze threads are getting old. Owners manuals and the search function here will outline what's specific to each individual car.