anti slip for turntable belt


Have you tried a safe product  that can extend the life of a turntable belt, and help also the belt not to slip at departure of the platter ?
audiosens
At the expense of a few micro-seconds slippage, I can live with cleaning and talc. This might be expected on initial treatment, but I expect it to settle over a short period.
I have a novel idea!!  Why not try to follow the manufacturer's recommendation.
@bpoletti I'll accept the sarcasm. For 1980's vintage turntables, belt advice wasn't too forthcoming, nor are the original documents.