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Old 04-29-2014, 08:00 PM   #4
Vic Piano
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Join Date: May 2010
Location: Odessa, FL
Posts: 7,611
Default Re: STP in steering box

I've used STP (the original) in the steering box of all our flatheads for years, never had any problems with it. I can remember back in the '60 using STP in the crank case of some tired Flatheads, trying to get the last ounce of energy out of them... LOL
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