Originally Posted by ARCOgraphite
The suggestion of "run any 5w30 synthetic" is a "Fool's Choice"
I agree.
Originally Posted by Nitronoise
I have been running 5w30 full synthetic quaker state QSUD in my gen sets with Briggs motors for years biggest run was a full week in 80-85 degrees F only stopping to refuel.
I am glad to hear that you have have had a long string of success with what you are doing here, but one of these days your luck may run out. There is a reason for Briggs recommending 15W-50 for commercial applications, and it's been discussed at length here before. That reason is HTHS viscosity. Generators running at 3600 RPM with a heavy load sounds like a commercial application to me.
The suggestion of "run any 5w30 synthetic" is a "Fool's Choice"
I agree.
Originally Posted by Nitronoise
I have been running 5w30 full synthetic quaker state QSUD in my gen sets with Briggs motors for years biggest run was a full week in 80-85 degrees F only stopping to refuel.
I am glad to hear that you have have had a long string of success with what you are doing here, but one of these days your luck may run out. There is a reason for Briggs recommending 15W-50 for commercial applications, and it's been discussed at length here before. That reason is HTHS viscosity. Generators running at 3600 RPM with a heavy load sounds like a commercial application to me.