oldjag wrote:
I've noticed on two occasions problems with slipping and noise with
non-OEM V belts driving AC comps in cars. Once with replacement
belts, from NAPA and once from PEP BOYS. Both times they were name
brand, ie. Dayco or Gates belts with typical US sizing nomenclature
printed on the belt. The problems have been rapid and repeated
slackening after tightening, and noise. Replacing the belts with the
OE type metric belts seems to fix the problem, but they are sometimes
hard to find. Really a ****er that most auto parts stores seem to
only stock fractional belts that really don't work right. Anyone else
have this occur?

Yes, sir!

I replaced the A/C belt on my truck and the new (Dayco) part squeals
on A/C startup the same way that the old one did.
I shall investigate. Thanks!

--Winston