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Old 03-13-2010, 19:11   #1 (permalink)
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Default Unleaded Fuel in M38A1

I am a noob to these jeeps and I was wondering if there are any engine precautions to take since you have to run unleaded gas or if it is ok to run unleaded in it as is?
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Old 03-13-2010, 21:48   #2 (permalink)
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I've been running unleaded in ours for a year or so with no downsides.

But with time, you may have exhaust valve seat recession. If you are going to put a lot of miles on it, it may behoove you to have hardened seats installed.
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Old 03-13-2010, 21:55   #3 (permalink)
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I use a lead substitute additive in my 50 GMC I assume this would help on the Jeep
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Old 03-13-2010, 23:00   #4 (permalink)
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I did the same thing, I just picked up the lead additive at Wally world. I had no problems with the M38A1 or the GPW.
One of the few, Frank USMC RET
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