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    Subaru 2009 Forrester XT and Rotella T 5-40 questi

    I have been using PP 5-30 and Valvoline Synpower 5-30 in the car since new, the odometer reads 12,000. My highway fuel mileage typically is about 25-25.5 at 75 mph with the AC on with 5-30. Last change I switched to Rotella T 5-40, my highway mileage dropped to about 22.5 to 23. Is this pretty...
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    Rotella T 5-40 and Forester Turbo question

    It seems like about a year ago I read on this forum that Shell RT 5-40 was hard on cat's. Is this still a fact or has this changed since it now meets SM spec? Is there any risk involved in using it? I'd like to try it in my Subie Forester Turbo or would I be better off with something else. I've...
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    Subie Oil related question?

    I changed the oil and filter yesterday for the first time in my 2009 Subaru Forester turbo, I refilled with PP 5-30. At the same time I installed a Fumoto valve to simplify future changes. Today I started thinking that by installing the valve I have eliminated the magnetic drain plug and I am...
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    Oil for a Subaru Turbo

    I just purchased a Subaru Forester XT turbo. this is basically the same engine as used in the current WRX. The recommended oci is 3750 or 3.75 months to maintain warranty. The car will see a fair amount of California desert as well as occasional mountain pass climbing plus a lot of freeway and...
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