Your choice, Barry. Just sharing my experience vs. "most everybody that
uses it thinks it's the perfect oil". Still, hard to escape the fact that
heavier weight oils are harder to pump and to squeeze into close tolerance
areas designed for thinner oil. Last time I used a viscosity above 10w30
was in the '70's, in my '69 Charger R/T 440. And that was 20w40 racing oil.
:-)
RayB
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of BARRY
> OLIVER
>
> 15w50 Mobil 1 too thick for godawful hot midwest summer?
> Everything else I have heard about 15w50 Mobil 1 is that most
> everybody that uses it thinks it's the perfect oil. I do a lot
> of highway miles [35k/yr] and was under the impression that this
> was a prudent choice.
>
> >>> bpracing@worldnet.att.net 05/01/03 09:49AM >>>
>
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of BARRY
> > OLIVER
>
> > Are you in the great white north? 0w30 seems awful thin. I run
> > 10w30 in the winter and 15w50 in the summer.
> >
>
> Barry...agree on the 0w30 but your 15w50 seems awfully heavy as
> well. Don't
> remember the year of your truck but most late models are built with very
> close tolerances to operate safely with lighter viscosity oils.
> A heavier
> than recommended viscosity will be more difficult for the oil pump to move
> and could be costing you some performance and mileage.
>
> I'm in central Ohio where summer temps can easily reach the high 90's or
> above. We race all our vehicles in these temps and have had no problems
> with the factory recommended viscosity. For instance, my '92 Dak...10w30.
> Our '00 4.7L Grand Cherokee and '02 Stratus R/T...5w30. They've
> been raced
> all their lives :-) and none use any oil nor has anything broken.
>
> Just my .02 worth.
>
> RayB
> http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
>
>
>
>
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