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T
Seriously, air filtration is as or more consequential than oil choice for engine wear.
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T
So far so good.
1= Valvoline Restore and Protect 5W30
2= Valvoline Restore and Protect 5W30
3 = Mobil 1 ESP 0W30
4 = Valvoline Restore...
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T
Iron is nearly 5 times the universal average. Cr and Al are a bit high as well. With the high silicon, you probably have some dirt...
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T
How does the oil change history correspond to the UOAs? One oil change at the time of each of the UOAs?
The middle sample has the...
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