There is no oil cooler on a 1.9 engine, but there is on the automatic
transmission if you have one, so that is a possibility, but the oil
should have a red color in that case.

If you don't have an oil cooler here is really no way for oil to get
into the coolant since there are no pressurized oil paths near the
coolant chambers or in the heads, so I suggest you have the cooling
system flushed and refilled at a different shop, or do it yourself.
Your mechanic probably reused your old coolant, or someone else's to
save a buck (this is commonly done) and there is a bit of oil in it.
Did you have two gallons of $20 antifreeze on your bill?
--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext. 8208
Fax: 206-269-6360

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