Forum Discussion
tpi
Oct 08, 2015Explorer
Onan manuals are always an interesting read. There is an Onan standby generator using our Ford V10. 15W40 oil is recommended, and 5W30 is only recommended to 50 degrees F. FWIW they also call for cylinder head rebuild at 1000 hours (or two years whatever first) on the V10. 1000 hrs. translate to 30,000 40,000 miles of typical driving? Ummm don't think I'll be pulling the heads..
To answer your question-in warmer conditions a good cheap oil is 15W40 Delo or Rotella. I use Mobil 1 0W40. I think passenger car XW30 synthetics are a tad too light. Maybe mixed 50-50 with the same brand synthetic XW40 would really get it about right-a 30 weight on heavier end of spectrum.
To answer your question-in warmer conditions a good cheap oil is 15W40 Delo or Rotella. I use Mobil 1 0W40. I think passenger car XW30 synthetics are a tad too light. Maybe mixed 50-50 with the same brand synthetic XW40 would really get it about right-a 30 weight on heavier end of spectrum.
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