Generation III External Engine - red or green antifreeze?help

well my car was red antifreeze but i will like to replace it so should i use red or green?and if red were can i buy it at?

You want to buy Dexacool which is red/orange, not the regular green antifreeze. Havoline makes some for a reasonable price that you can get at any parts store. It's like $30 a gallon from GM and Havoline is like $10-15 a gallon. :)

so u cant use green?cool thanks

No, you can't use green. Using the green in a system that has dexcool in it will clog it up and cause bad times for your motor.

there is "new" stuff out by prestone that claims to be compatable with ALL fluids and ALL colored fluids red or green... I used this stuff on a 160 T-stat install . so far so good ... and coincidentally it's green ... maybe this stuff is the exception to the rule :confused:

Probably.

there are alot of people on this site, who flush their systemn and switch to green, the thing is you can't put one in without cleaning the other one out first.

OK, sorry to hijack, but now I have a question. Do you need antifreeze at all?

I ask, because I live in New Orelans. We NEVER get below 30*, and my car is kept in a garage. Also, it is pretty much a race only car - driven on the road 2-3 times per month. Doesn't regular water have better heat dissipating properties than antifreeze?

OK, sorry to hijack, but now I have a question. Do you need antifreeze at all?

I ask, because I live in New Orelans. We NEVER get below 30*, and my car is kept in a garage. Also, it is pretty much a race only car - driven on the road 2-3 times per month. Doesn't regular water have better heat dissipating properties than antifreeze?


Not for "anti-freezing" purposes, but you should still use antifreeze for the rust inhibitors and lubricative properties it has. It's better for the cooling system to not run pure water.

I just saw the new Prestone green, and it is good for all systems, red/orange or green and can be mixed, I personally wouldn't do it though. They also have a GM approved Dexcool type coolant (orange) that will also be fine to use..

I just saw the new Prestone green, and it is good for all systems, red/orange or green and can be mixed, I personally wouldn't do it though. They also have a GM approved Dexcool type coolant (orange) that will also be fine to use..

GM also says you don't need to change the coolant for 100k miles. :eyes: :bs: Just goes to show you that you can't trust everything someone says, even a company. Probably pretty easy to get away with, being that it is coolant and not to many people check it or drain it often.

Since our engine blocks are aluminum and not iron, the cooling system is exposed to much less gunk, therefore, the recommendation that the antifreeze is now good for 100K.

GM also says you don't need to change the coolant for 100k miles. :eyes: :bs: Just goes to show you that you can't trust everything someone says, even a company. Probably pretty easy to get away with, being that it is coolant and not to many people check it or drain it often.

Just passing on what Prestone claims. Again, I personally won't do it whether it's fine or not. I do however use the Prestone Dexcool and so far so good.

some good tips as i read along i post 2 diffrent post on this question as some may have notice already.but i stick to red from the dealer