I have an '88 Westy with 233,000 miles on an original automatic trans.  (the
engine has been done)

I have seen an occasional reference regarding pre-emptive replacement of the
oil cooler on the grounds that coolant in the fluid is a no-no.

Has anyone had experience with failed coolers and does anyone have an
opinion on pre-emptive replacement.

thanks
Geoff Thomas
233,000 and still going strong