I have had an 85 Seville now for about 4 months with no engine issues, the coolant seems to bob up and down oddly. Will lower then rise back to the prior level after cooling dont know why but no worry signs yet so ya. My question is for all you guys how many miles do you have on your engine?. I read an article joking these were known by mechanics to average 20k miles. I am currently at 91k plus. Share your info, thanks.