Oil Viscosity Values: Royal Purple and Mobil 1
#11
5W20 is for mpg reasons. Obviously when you're running hard out on a road course, mpg only matters to the extent that you don't run out in the middle of a session. Better protection is the game then.
FWIW, I've heard that 5W50 shears down to 5W40 or possibly lower in a relatively short time. Don't know how reliable that is, but it's something to consider where 5W40 is still a little more viscous at temperature even if it runs a little bit hotter.
Norm
FWIW, I've heard that 5W50 shears down to 5W40 or possibly lower in a relatively short time. Don't know how reliable that is, but it's something to consider where 5W40 is still a little more viscous at temperature even if it runs a little bit hotter.
Norm
#15
5W20 is for mpg reasons. Obviously when you're running hard out on a road course, mpg only matters to the extent that you don't run out in the middle of a session. Better protection is the game then.
FWIW, I've heard that 5W50 shears down to 5W40 or possibly lower in a relatively short time. Don't know how reliable that is, but it's something to consider where 5W40 is still a little more viscous at temperature even if it runs a little bit hotter.
Norm
FWIW, I've heard that 5W50 shears down to 5W40 or possibly lower in a relatively short time. Don't know how reliable that is, but it's something to consider where 5W40 is still a little more viscous at temperature even if it runs a little bit hotter.
Norm
#16
Step up at least to 5W30.
I've been using Motorcraft full syn in that grade, and so far, so good. But I don't do track days where the temperature is predicted to get into the 80's (a heat exhaustion thing), which might tip your decision toward a little more hot viscosity if your track days run more than a few degrees warmer than that.
Norm
I've been using Motorcraft full syn in that grade, and so far, so good. But I don't do track days where the temperature is predicted to get into the 80's (a heat exhaustion thing), which might tip your decision toward a little more hot viscosity if your track days run more than a few degrees warmer than that.
Norm
#17
Step up at least to 5W30.
I've been using Motorcraft full syn in that grade, and so far, so good. But I don't do track days where the temperature is predicted to get into the 80's (a heat exhaustion thing), which might tip your decision toward a little more hot viscosity if your track days run more than a few degrees warmer than that.
Norm
I've been using Motorcraft full syn in that grade, and so far, so good. But I don't do track days where the temperature is predicted to get into the 80's (a heat exhaustion thing), which might tip your decision toward a little more hot viscosity if your track days run more than a few degrees warmer than that.
Norm
Does anyone have any experience with aftermarket oil coolers?
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themamba24
2005-2014 Mustangs
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05-05-2016 11:33 PM