Is Castrol 10W40 Oil ok for a 06GT?
04-04-2006, 06:31 PM
#5
5th Gear Member
Join Date: Mar 2006
Location: Nor Cal
Posts: 2,179
RE: Is Castrol 10W40 Oil ok for a 06GT?
ORIGINAL: MR.Mustang
That is a thicker oil; recommended is 5W20. I understand these new engines have tighter tolerances and need thinner oil.
That is a thicker oil; recommended is 5W20. I understand these new engines have tighter tolerances and need thinner oil.
Has nothing to do with tolerances. It has to do with MPG. I would not run 10w40 that is for sure. You would be ok with a 5w30 but nothing more than that and stick with Synthetic.
Richard
04-04-2006, 10:29 PM
#6
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Join Date: Apr 2005
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RE: Is Castrol 10W40 Oil ok for a 06GT?
IT has everthing to do with tolerances, stick with 5-20 only nothing else. I believe th engineers who designed the engine and require 5-20 know what they are doing. They tighten the tolerances which required thinner oil thus a small gain in gas mileage.
04-04-2006, 10:36 PM
#7
5th Gear Member
Join Date: Mar 2006
Location: Nor Cal
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RE: Is Castrol 10W40 Oil ok for a 06GT?
ORIGINAL: cfr865
IT has everthing to do with tolerances, stick with 5-20 only nothing else. I believe th engineers who designed the engine and require 5-20 know what they are doing. They tighten the tolerances which required thinner oil thus a small gain in gas mileage.
IT has everthing to do with tolerances, stick with 5-20 only nothing else. I believe th engineers who designed the engine and require 5-20 know what they are doing. They tighten the tolerances which required thinner oil thus a small gain in gas mileage.
And that is all it is about.
Richard
04-04-2006, 10:38 PM
#8
2nd Gear Member
Join Date: Oct 2005
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RE: Is Castrol 10W40 Oil ok for a 06GT?
yeah i'm still trying to determine if i'm gonna use 5w-20 or 5w-30. The 5w-30 is easier to find by me. From what i remember the mobil 1 supersyn 5w-30 is also on the light weight of the 30 side so how would it not be ok?
04-04-2006, 10:39 PM
#9
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Join Date: Mar 2006
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RE: Is Castrol 10W40 Oil ok for a 06GT?
ORIGINAL: trey929
yeah i'm still trying to determine if i'm gonna use 5w-20 or 5w-30. The 5w-30 is easier to find by me. From what i remember the mobil 1 supersyn 5w-30 is also on the light weight of the 30 side so how would it not be ok?
yeah i'm still trying to determine if i'm gonna use 5w-20 or 5w-30. The 5w-30 is easier to find by me. From what i remember the mobil 1 supersyn 5w-30 is also on the light weight of the 30 side so how would it not be ok?
