Coolant change
Racer
Joined: Apr 2002
Posts: 389
Likes: 0
From: Micco FL
Re: Coolant change (corvette90)
I do mine every 2 years. Pop the hoses, let it run with a fresh water hose to clean it out real well. Then use about 10 gallons of distilled water for a final flush, drain it down 2 gallons, put the orange stuff in and the GM veggie tabs, then top off with distilled water. Make sure and keep the OPTICRAP dry and to burp the system!
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Coolant change (corvette90)
I would replace what was installed from the factory. My 91 had the green stuff so I replaced it with that (and added a bottle of water wetter). GM did'nt start using dexcool until 95 or 96 so your 90 should have had green coolant in it. I flush and replace the coolant in all my cars every two years (or at a cooling system failure). Did the vette in 06-01 and will do it again in the spring.
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
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