Briggs and Stratton sells a Pump Oil at Lowes without identifiers on it. A call to Briggs said that it was 75W-90 synthetic oil.
A call to Trot Bilt yielded nothing. The CSR thought that Briggs made the pump, LOL. They did not know what type of oil to put in the pump. Sad, but true.
So question is what type of oil to put in the Troy Bilt pump? 30 W non-detergent synthetic ? The Briggs oil 75W-90 synthetic ? Or just a synthetic over the counter 75W-90 synthetic like Royal Purple ?