the Pre-FSS years saw service intervals every 15k miles. Therefore, you would have one at 60k miles and at 75k miles. Other stuff gets done according to the calendar, such as brake fluid every two years and coolant change every three years. Also, at least one oil change in between service at the 15k marks.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record