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Old 06-30-2016, 03:53 PM   #1
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Does anybody uses mobil1 extended performance on a gas engine
They said you can change your oil every 15,000 miles

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Old 06-30-2016, 06:53 PM   #2
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I think it would be good oil for the engine.....but I wouldn't extend the change interval past what is recommended with conventional oil. Part of the reason for changing the oil, is not that the oil or additives are worn out....its to get rid of the accumulated soot and metal particles that can't be filtered out by the oil filter.

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Old 06-30-2016, 06:56 PM   #3
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The beauty of Mobile-1 is that is has proper viscosity from being in dry ice to boiling water.
Dale & Mark Bruss
10 Years Full-Timing now 40' Travel Supreme
Now with a 2016 Bounder 33C
Lots of RV Information at www.dmbruss.com
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Old 07-01-2016, 01:11 AM   #4
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Most RVers never reach 15 K miles in one year. Therefore, Mobil 1 extended performance is to be changed annually.

What the period of coverage is
The Mobil 1 Extended Performance limited warranty is valid for 15,000 miles or your vehicle’s OEM recommended oil change interval, whichever is longer.

Additional requirements for all Mobil 1 Extended Performance products include:

Oils must be put in service not later than five (5) years from the date of purchase; and an oil change must be completed every twelve (12) months.
George R. - Fulltiming since January '03
2007 Newmar Mountain Aire 3991
2012 Chevy Malibu LT1
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Old 07-01-2016, 01:38 AM   #5
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I use Mobile 1 synthetic in the corvette as per GM. I however do not use the extended formula. Most folks do not drive lots of miles in a year; therefore I do not see using it unless you drive 15k mile or more in a year.
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Old 07-01-2016, 01:55 AM   #6
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I ran it in my 454 and still run it in the generators, but would NEVER attempt to extend mileage on an engine that's arguably already running on the edge. Don't cheap a few bux on the engine oil or you might be shelling $3k to fix the oopsie


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