
I once have had a bad timing belt change from a dealer, they left the cover loose and bolts missing and also used the old screw driver trick to turn over the engine to get a new fan belt on that they claimed I needed and the old belt they put in the trunk was cut off to save installation time , a month later my vibration damper came loose on the flywheel pulley from being way to tight and I had to pull the radiator and at lot of bull to fix it myself, bottom line, I change my oil every 3000 with filter IM not harsh on the car , can I let the belt go to 90k.???? the engine is as steady as ever at idle dont want another bad quickie job that who knows if a cigar butt or paper clip was left in the timing cover as well as a hamburger wrapper?