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40's 40

It's non-frictionally modified truck oil. It's made to withstand heat.

It's all state-of-the-arts and sciences now. And to lower emissions and increase mpg, we're about to see big fleet operations running as low as 20W viscosity oils in their rigs when that tiny fuel savings adds up to a lot more than the downtime risk of an engine failure and the expense to repair.

Yes, these high-tech oils are that good.

Get some!