Oil Pressure
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Oil Pressure
Will be changing to a new grade of oil this week because 15w50 FS is a little thick. On 10w50 FS what pressure readings should i expect?
4 year old EJ20 cdb engine
Cheers. Andy
4 year old EJ20 cdb engine
Cheers. Andy
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Im 99.9% sure that 15w50 and 10w50 are the same thickness as it is the second number that determines how thick the oil is and the first number is something to do with protection of the engine when cold, i.e a 5w will give better cold protection than a 10w.
If you want to try a thinner oil than a 15w50 then i would say a 10w40 is appropriate.
If you want to try a thinner oil than a 15w50 then i would say a 10w40 is appropriate.
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I did this on my 03 WRX and have not noticed a difference on my Defi's. The 10w will be better cold than the 15w. There are figures I have looked at but it got too heavy and complicated for me. If you require more info then contact one of the Opie oil guys.
I made the swap for the better cold start properties. There is a difference in properties and that is fact, but I will paste some figures here from Opie website.
Fuchs info for 10w50, http://www.opieoils.co.uk/pdfs/New-F...RO-S-RANGE.pdf
Info for 15w50, http://www.opieoils.co.uk/pdfs/New-F...O-R-15W-50.pdf
If you look around the Opie Oils website, you will find more comparative data.
I made the swap for the better cold start properties. There is a difference in properties and that is fact, but I will paste some figures here from Opie website.
Fuchs info for 10w50, http://www.opieoils.co.uk/pdfs/New-F...RO-S-RANGE.pdf
Info for 15w50, http://www.opieoils.co.uk/pdfs/New-F...O-R-15W-50.pdf
If you look around the Opie Oils website, you will find more comparative data.
Last edited by MaDaSS; 03 August 2011 at 10:49 AM.
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