OE-30: ( Lubricating) Oil, Engine, 30wt
Also known in the civilian world as SAE-30
You can find straight 30wt at most agg supply places, a few auto parts stores near me still cary it. Just about everything that has a straight weight oil specified does well on multiweights so you can run 10w-30 in an engine where the Gov't lube order called for a OE-30...
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