by KE4AVB » Fri Mar 15, 2019 1:22 am
As said use the blend for the temps you are to be operating in. Here in the Southeast we deal with higher temps and Briggs has changed their 5W30 Synthetic recommendation to 15W50 Synthetic as we now experiencing 100+ temps during the Summer months. This makes sense as the 5w30 is so thin at operating temps during these times it doesn't even show on the dipsticks.
This is something I am checking on getting which is 10-15 gals bulk 15W50 Synthetic this week, just awaiting on a reply from one my vendors as to the pricing per quart; not cheap by a long shot but life of the equipment is important.
I personally have been seeing fuel boiling during operation during the Spring and Summer months too causing vapor lock in the gravity fed fuel lines. This is mostly a fuel blending problem by the gasoline distributors as Winter blend is too volatile for hot Spring and Summer months.
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