Many people have told me to use only 4-stroke atv/motorcylce oil in any ATV, such as Castrol motorcylce 10-40. How about just regular automotive oil like valvoline, pensoil or quaker state? I know many people who have always ran 10-30, 5-30 or 10-40 automotive oil in there three wheelers since new and nothing ever went wrong. Should we really be spending extra money on specail motorcylce oil in our ATC's knowing that we could easily and safely run automotive oil at a lower cost? What do you all think?


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86-87 Tecate ROCK!