Castrol Magnatec?

mommucked

Endeavoring to persevere
Joined
Sep 26, 2011
Location
Rural Apex n.c.
....Good, bad, or ugly? Put it in my 98, 195k 4.3 and it has noticeably quieted it @ start up, idle, and the motor is smoother @ idle. Mileage has improved 2 mpg.
 
I think I've only seen 2 commercials, on it, & been long enough I've forgotten about it. I've seen or heard nothing else on it.
I have nothing to try it on, unless I was looking for mileage improvement. And that's rather hard to verify.
 
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