new project
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Junior User
Joined: Feb 2004
Posts: 93
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From: walnut cove,nc
new project
how about that a 51 f1 followed me home yesterday flat head v8 stuck tight i was told to pour mystery oil in plug holes my question is ,is mystery oil better than pb blaster what do you suggest thanks in advance 
Lead Driver
Joined: Oct 1999
Posts: 6,768
Likes: 547
From: Kalispell, MT
Everybody has their favorite recipe - MMO, PBlaster, diesel oil, transmission fluid, etc. All work about as well as the others.
I'd pull the intake and slosh whatever you decide to use around the lifter bores and valve stems. Also pull the heads and make sure the valves get a good soaking. This way you can check the cylinder walls into the valve pockets to make sure there are no cracks. It's really easiest to pull the engine to do it right.
Enjoy your project and keep in touch - they're sweet rigs!
I'd pull the intake and slosh whatever you decide to use around the lifter bores and valve stems. Also pull the heads and make sure the valves get a good soaking. This way you can check the cylinder walls into the valve pockets to make sure there are no cracks. It's really easiest to pull the engine to do it right.
Enjoy your project and keep in touch - they're sweet rigs!
Cargo Master
Joined: May 2003
Posts: 2,561
Likes: 1
From: Earth
Use 3 in 1 Marvel oil. That stuff will work. When I got my 400 it was frozen solid from rust and the Marvel oil worked for me. Pour a fair amount in the cylinders and let it sit for a few days. Good luck! 
Senior User
Joined: Mar 2006
Posts: 227
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From: Bethesda, Maryland
My '53 flathead was stuck when I bought it. I soaked it in Marvel Mystery Oil for about a week and it was a cinch to break free. I didn't bother taking off the intake or the heads, just went through the plug holes as a first attempt and it worked.
Senior User
Joined: May 2005
Posts: 334
Likes: 1
From: Airdrie Ab. Canada
Check out this thread https://www.ford-trucks.com/forums/s...d.php?t=448714 I used coca cola worked great
Senior User
Joined: Feb 2006
Posts: 168
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From: Syracuse NY
you might want to try this stuff
http://www.safestrustremover.com/
I used it to clean out the water jacket in my 46 hudson and it worked great, it doesn't have any lubricating qualities but man does it work nice
http://www.safestrustremover.com/
I used it to clean out the water jacket in my 46 hudson and it worked great, it doesn't have any lubricating qualities but man does it work nice
Senior User
Joined: Feb 2006
Posts: 168
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From: Syracuse NY
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Fleet Mechanic
Joined: Mar 2005
Posts: 1,511
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From: peyton, colorado
Coke used to be the favorite substance for soaking rusted parts when I was a kid. Now that it comes in plastic 2 liter bottles, it's great for soaking small parts, just drink the top few inches from the bottle, and cut the top off. No, really, I'm serious.
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Cargo Master
Joined: May 2003
Posts: 2,561
Likes: 1
From: Earth
Originally Posted by propane32
hey 53FATFNDR what is this 3 in 1 marvel oil i went to 5 auto parts stores nobody had it only had mystery marvel oil is it the same