Hi Folks, have been reading for the last 4 hrs, until my eyes bled...lol New account also as switched emails and lost old account.
Up until 3-4 years ago, had always used M1 syn, and then EP in my Volvos and other cars. Always had good luck, no oil use, very clean engines inside. I then bought 2 Volvos with the T6 3.0l turbo 6, back 4 years ago. They called for a 5/30 a5/b5 so I switched to PUP at the time. The higher mile one(125k miles) started to use a bit of oil between changes recently , so swapped out the oil trap as maint. even though was working fine. There was slight sludge inside, more than I would have expected as oil was changed every 5k miles max. Its still using about the same. Now this may be caused as oil has been reformulated and has a lower flash point? Oil is also always very dirty looking when changed.
So I'm going to switch to M1 , but trying to decide on whats best. Not really concerned with cost/warranty/fuel mileage. What I AM concerned about is wear and protection. Both cars get run hard, and the lower mile one(40k miles-Polestar) gets tracked couple times a year. Both get oil changes at 4-5 K miles. From what I have read, esp might be a better choice, as it seems to be more shear stable? And the VW 504/507/C30 rating also seems to point to a better oil? I can't find a flashpoint for the esp though for some reason.....Thanks for any recommendations.
Up until 3-4 years ago, had always used M1 syn, and then EP in my Volvos and other cars. Always had good luck, no oil use, very clean engines inside. I then bought 2 Volvos with the T6 3.0l turbo 6, back 4 years ago. They called for a 5/30 a5/b5 so I switched to PUP at the time. The higher mile one(125k miles) started to use a bit of oil between changes recently , so swapped out the oil trap as maint. even though was working fine. There was slight sludge inside, more than I would have expected as oil was changed every 5k miles max. Its still using about the same. Now this may be caused as oil has been reformulated and has a lower flash point? Oil is also always very dirty looking when changed.
So I'm going to switch to M1 , but trying to decide on whats best. Not really concerned with cost/warranty/fuel mileage. What I AM concerned about is wear and protection. Both cars get run hard, and the lower mile one(40k miles-Polestar) gets tracked couple times a year. Both get oil changes at 4-5 K miles. From what I have read, esp might be a better choice, as it seems to be more shear stable? And the VW 504/507/C30 rating also seems to point to a better oil? I can't find a flashpoint for the esp though for some reason.....Thanks for any recommendations.
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