Quote:
JW wrote:
Given the problems a transmission oil leak can cause to a transmission and cooling system, you my want to re-think about using one of questionable integrity.
Interestingly, this topic relates tangentially to the discussion of what ATF to use in the Ultramatic because certain fluids support the formation of corrosion inside transmission coolers, particularly if Dexron II was used for any appreciable length of time.
Dexron III (today marketed as Dex/Merc or just ATF) has great corrosion inhibiting properties and is backward-compatible to Type A.
If we were having this discussion in the 1970's, I'd be wary of using a used cooler, but if it holds good pressure now on the transmission fluid side, I'd go ahead and use it today without fear-- it's more likely to leak coolant out into the world than to cross-contaminate ATF and coolant if its not already leaking, given the advances in today's fluids. Just my 2 cents.
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