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29spcoupe · 02-17-2016, 06:21 PM

I used MMM in my 41 Packard. It seemed to help get rid of vapor lock. The fuel line ran pretty close to that long exhaust manifold.

02-17-2016, 06:21 PM	#5
29spcoupe Senior Member Join Date: Aug 2014 Location: Rhinebeck, NY Posts: 761	Re: Marvel Mystery Oil increases engine HP? I used MMM in my 41 Packard. It seemed to help get rid of vapor lock. The fuel line ran pretty close to that long exhaust manifold.