hey,

its now smoking pretty bad after i addes some mistre oil..in the enging.. i pulled the plugs and there all covered with oil..then theres oil coming out of the exahous.. flange gasket...what show i do? some one said that is lowered the viscasity of the oil now the oil is going through the valve seals...what should ido from here..flush out the oil...then what..will i need a vavle job..?

THANKS,

steve

Long live the Z...

ack

I once killed a ford 300, listened to a friend and did the mystery oil thing and ended up with a serious rod knock.

get the stuff out! run some 30 weight and run it a little and change the oil again.

Marvel Mystery Oil is "Top end lubricant" fuel additive, mainly for diesel engines. It's been 25 years since I've read the label but I don't remember anything about putting in your crankcase.

Originally posted by Victor Laury

Marvel Mystery Oil is "Top end lubricant" fuel additive, mainly for diesel engines. It's been 25 years since I've read the label but I don't remember anything about putting in your crankcase.

from the site

Description:

ADDED TO GASOLINE:

Cleans and lubricates fuel injectors and carburetors

Improves gasoline mileage

Reduces and prevents varnish and gum build-up

Extends spark plug life

Safe for catalytic converters and oxygen sensors

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ADDED TO ENGINE OIL:

Prevents valve sticking and clatter

Fortifies properties of engine oil, prevents breakdown caused by extreme temperatures

Promotes easier cold weather starts

Reduces and prevents acid and sludge formation

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FOR ALL MARINE ENGINES:

Inboard and outboard