re: 97 Bonnville Mantenance

Manuals: Can't find 'em. Any manuals or service intervals on this website?

I'm not sure if there are any manuals with service intervals on this forum, but I'm sure someone has them.

However, when I had my Bonneville, I changed the engine oil every 5,000 miles (usually ended up being once a year, with how many short distance drives I took.) If your car still has the Dexcool coolant running through it, you should change it out every 5 years.

As for anything else, I'll let the others chime in with what they know.

Lastly, how many miles are on the Bonnie?

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'02 Pontiac Bonneville SE 108,539 miles, N/A, SSEi exhaust system, boat roller mount. Gone, but not forgotten.
'13 Buick Regal GS 102k miles, 270 hp, 295 lb/ft, ZZP intake.
(yes, there is a story behind my avatar.)