Author Topic: Mobil 1 Synthetic Oil  (Read 2319 times)

Offline Joe in PA

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Re: Mobil 1 Synthetic Oil
« Reply #15 on: October 20, 2011, 04:43:25 PM »
My girl's 2009 Mustang is semi-hopped with the 4.6L V8 and FRPP cams, CAI and KR500 exhaust.  Tuned to take advantage of 93 octane and easily able to chirp in all gears.  She also runs Mobil1 5w20 in it and can easily get 25mpg on the highway.  Just because someone modifies a vehicle, doesn't mean they know what they are doing.  I'd not judge the benefits of a particular weight oil based on the experience of someone who can only manage to get 10mpg out of his Mustang.

There are plenty of vehicles out there running on 5w20, including some that have been on the road for over 10 or 15 yrs.  If what you are saying is true, I think we'd be hearing about a large number of blown engines by now.  Certainly hasn't been my experience using the stuff.  shrugx
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Offline eborcim

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Re: Mobil 1 Synthetic Oil
« Reply #16 on: October 22, 2011, 08:13:22 AM »
I think there is some truth to the w20 vs w30 mpg discussion.  I put in 5w30 on an oil change for our ford Escape and noticed the mpg drop a couple points.  I went back to the 5W20 semi synthetic and mpg went back to normal.  Of course it never did get over 22 mpg anytime  LOL.  It's got 204K on the clock so I'm keeping on driving with my blend.

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Re: Mobil 1 Synthetic Oil
« Reply #16 on: October 22, 2011, 08:13:22 AM »