[kutsyy]

Not modified engine '11 3.7L, when running on the track engine coolant temperature stays constant 230F. Since it is stable I am not too worried, but how high is it? How bad is this for the engine?

Thanks,

Vadim

PS: it was a hot day, Intake Air Temp shows 105F.

 

[pikapp]

230* at the track, that's pretty normal. Optimum temp is 220-230, so you're good.

 

[kutsyy]

230* at the track, that's pretty normal. Optimum temp is 220-230, so you're good.

Thank you.

 

[wjbertrand]

Make sure you’ve got fresh synthetic oil in it.


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[pikapp]

Make sure you’ve got fresh synthetic oil in it.


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And if you track a lot in hot weather, consider using 10w30 syn vs, 5w20, if that's what you use.

 

[kutsyy]

And if you track a lot in hot weather, consider using 10w30 syn vs, 5w20, if that's what you use.

. Any reasons for 10w30 in particular? I know for Coyotes and Voodoo Ford recommends 5w50 for racing, so I was thinking about that one...

 

[pikapp]

. Any reasons for 10w30 in particular? I know for Coyotes and Voodoo Ford recommends 5w50 for racing, so I was thinking about that one...

5w20 is low viscosity to begin with in normal driving and recommended by Ford. Add racing to the mix, things get hotter and the 5w20 may not provide all the protection you'd want/need. I've been running Full Synthetic. 10w30 for 10 years in my 4.6L SC engine and once heated up oil pressures and temps are optimum for what I do. Even on very hot days at the course, temp & pressure stays where it needs to. For everyday, normal driving, 5w20 is Ford recommended.

 

[crjackson]

. Any reasons for 10w30 in particular? I know for Coyotes and Voodoo Ford recommends 5w50 for racing, so I was thinking about that one...

I use 5w-50 FS myself since new. It’s what Ford recommends for Track Pack cars (which I have).

 

[pikapp]

This might help. Again, for racing applications, things can change.
www.fcsdchemicalsandlubricants.com/quickref/oilchartUS.pdf

 

[kutsyy]

This might help. Again, for racing applications, things can change.
www.fcsdchemicalsandlubricants.com/quickref/oilchartUS.pdf

I prefer M-6731-FL820 for both 3.7L and 5.0L