Marvel Mystery Oil

[7tre-cutty]

My interior guy says he uses this in his old trucks. Says it has worked for him.

Just looking for some input...pro/cons.

thanks.

[texxas8902]

My interior guy says he uses this in his old trucks. Says it has worked for him.

Just looking for some input...pro/cons.

thanks.

Uses it for what? Runs it in the crankcase? :confused:
I've used it with good results to unstick an Olds 455 motor that a lady ran low on oil. In the early 80s this lady in a 71 light metallic blue Cutlass SX got pushed into a gas station where a friend worked. The motor was stuck because she never checked the oil. I gave her $300 for the car after no one working there wanted it and she couldn't afford to fix it. She walked off and I went to the auto parts got some marvel mystery oil and squirted it in the spark plug holes. I got a ride to the station the next day, broke the engine loose with a breaker bar on the crank topped off the oil and started the car. Smoked a few seconds and then ran perfect. After awhile I sold it to a friend's brother who drove it for 3 or 4 years with no engine problems. It was really a nice car, loaded, triple blue.

[Firethorne77]

Tex... You know it with that story!!

I have unsiezed two motors with it back in the day. It was amazing that it worked. Both cars were used for derby runners, 1 a 72 ventura 350, 2nd a ford ltd, i think it was an '82.. Anyhow.. why would you use it on the interior
7tre-cutty?

[sumrof75]

We ran it in a late 60's Buick Wildcat that ran in a derby. First hit took the radiator and the heat had 20+ cars running. The car lasted to the end and qualified for the feature event. The intake was glowing red back at the pits and the motor was so hot we couldn't get it to shut down and had to kill the motor while in gear. After it was shut down it seized up and we had to bow out of the finale. However... after the night of sitting the car started the next day without protest, amazed one of our tech's shook his head and said "what the h... do they put in that sh.." Used it every year afterwards that we ran a derby car.

[7tre-cutty]

Tex... You know it with that story!!

I have unsiezed two motors with it back in the day. It was amazing that it worked. Both cars were used for derby runners, 1 a 72 ventura 350, 2nd a ford ltd, i think it was an '82.. Anyhow.. why would you use it on the interior
7tre-cutty?

I'm sorry, I guess I worded it wrong. My interior guys uses it in his old trucks, mixed in with regular motor oil. He said it will help clean out the engine and will help keep the fuel lines/carburator clean.

I was just telling him recently that I changed the oil and it was black as heck, darkest I've even seen motor oil. He said it could be gas getting into the oil or something like that, I can't recall exactly. I asked what can I use to flush the motor and he mentioned that those cans of motor flush might harm the engine as well as clean it. So he recommended that I add some Marvel Mystery Oil to my engine. And to just flush it with regular oil with or w/o Marvel Mystery Oil.