Belt dressing spray

[pschauss]

I have always been skeptical about snake oil products like this, but Nigel Calder recommends regular application of a belt dressing on the alternator and raw water pump belts. I looked a some of this stuff at Pep Boys and the label warns that it is highly flammable. Is it safe to use this stuff on a marine engine. I believe that the label and Nigel both recommend spraying it on the belt while the engine is running?

Thanks,

[Bruce]

Nigel Calder was an idiot writer.
If the belts are tightened properly and in good shape you don't need belt dressing.