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  1. R

    87 BMW 325 eta M20B27 high metals, 1700mi M1 0w40

    Only two days on the track, only 1700 miles. I don't seem to have good luck with M1. Castrol GTX is looking WAY better or are two track days all that hard on the tractor like eta engine? EQUIP. MAKE/MODEL: BMW 2.7L (M20B27) 6-Cylinder OIL TYPE & GRADE:Mobil 1 0W/40 OIL USE INTERVAL:1,703...
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    12K on some M1 5w30 lots of Iron with Mobile 1

    I tried to go a year on this oil and a Honda filter with top offs. 2004 Honda Accord 2.4 I4, mostly driven in the city, but had at least 7k of road trips on this oil. The last top off quart of oil was M1 10w30 because I didn't have anything else laying around. My goal was to just change my oil...
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    M1 5w-30 4,613 mi

    Hello, I have 118,145 mi on a 2004 Honda Accord 2.4L I4. It has been getting 15-23 mpg, and loss of power for the last few months. It used to get 25-30 mpg. I've kept the maintenance schedule. UOA has 52 ppm Na. Blackstone thinks I should try another oil? Could I have a small head gasket leak...
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