02-12-04, 08:18 PM
Hello all I recently found this Caddy forum and had a few questions. Me and my pop are really into Caddys. I have a '85 Fleetwood Brougham (good car except for that damn 4.1!), my dad has a '68 & '70 Coupe deVille, a '89 Sedan deVille (damn good car 279k and still going) and he recently got a '96 Blk/Blk/Blk Eldorado w/ 75,7xx on it. It's a really nice car, runs good (not the ETC but it still moves), and no codes in the system. The thing is I am seeing a small oil leak, looks to be tranny fluid, so any advice on where to check for the leak. Also any advice on flushing the cooling system, I know this one runs dexcool. Any help is appreciated, thanks.
Check the transaxle fluid level? There is plumbing between the transaxle and radiator that could be leaking slightly at either end.
I do not care for fluid flushes. Drain the coolant as much as possible and refill with a premix of 50/50 Dex-Cool and distilled water. Your goal is to refresh the corrosion inhibitors in the Dex-Cool without losing control of the 50/50 mix ratio.
Also a good idea to add the coolant supplement pellets from GM, or the same material packaged as Bar's Leaks Golden Seal powder (available at Wal-Mart (most of the time)). Whichever you buy, pop off a hose and put the supplement in there; NOT in the overflow tank.
02-12-04, 11:34 PM
Thanks JimD, I'll check the cooler lines, the car does not seem to be loosing tranny fluid on the dipstick. So is there a pre-mixed 50/50 of dexcool, I know there is for the green coolant. If so which part store would carry it.
I buy full strength Havoline Dex-Cool at Wal-Mart and mix it myself. That way I can be 100% sure what I am putting in the cooling system.
02-13-04, 12:54 PM
For the record... My parents have a 97 Park Avenue and the owners manual states to use either the GM part no. (don't remember it) or Havoline. First time I ever saw a Mfg'r recommend an aftermarket antifreeze brand by name, outside of M1 for motor oil.
So, yes, I run M1 and Havoline Dexcool.