My opinion: If you're changing every 3K miles and never driving the car hard, M-1 10W30 is probably fine. However, if you're driving hard at all, go for a better oil. I paid $6.25/qt for the two cases (12qts/case) of RP, shipped to my house. If you buy it in the 5 gallon jug, it's even cheaper.
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Slow and low, that is the tempo.
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