Yeah, another oil question
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Does anyone make a 10w-50 oil? I have Mobil 1, 15w-50 for winter, but the oil pressure is still not building as quick as it should on cold starts.
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Just finished my winter oil change, 5w40 Rotella, used this the last couple of years as the 20w50 VR1 I run during the summer is way too sluggish on cold morning start ups.
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The first number is the viscosity at temp, the second is the viscosity when cold, if xx-40 were to cause issues it would be when cold, not at temperature...You may have bigger issues.
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I ran Castrol 5w-50 in my 944S for the first few years of ownership. Never driven in winter, did see sub 30 degree temps in the late fall.
It did throw a rod bearing a few years later though.....
It did throw a rod bearing a few years later though.....
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Never seen a 10w50 dino oil, seen 5w50 in synthetic.