Doo Mineral oil here. My dealer sells it bulk for $28 a gallon. Just bring in your empty jugs, and they fill em I was running that cheap Esso dark green oil fro a while.(never went to town to see my dealer, got it at the gas stn) But I found it really changed the readings on the plugs. Darkened them up ALOT. so, what you thought was rich, might acctually be lean.
bombardier xps synthetic in my 98 fromula z 670 it is yellow jug just picked up a gallon today 48$ us plus tax its in a yellow jug ====way less smoke then the others i have used ---i also used the drark green years ago cheaper to buy better oil than plugs all the time
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