w15 / 40 vers. w100 ???????

·         Eddie n Hall sr

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Hello Doug. Your help will is needed to know what oil to use. I have a 2200 engine serial # 22A3372 is has a total of 50 hrs

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·         Doug Smith

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Hi Eddie,
I have a personal preference for W100, particularly if you're using a fuel containing lead, because it has a better tolerance for lead buildup in the oil. But it does depend on the climate you're operating in - in colder areas the multigrade is a good idea, particularly with hydraulic lifter engines.

But really, if you change the oil at the recommended intervals and your oil temps/pressures are right you should not have an issue with either.

Regards,
Doug.