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Discussion Starter #1
Hello all!

Did Google search for the effects (or non-effects), of

Marvel Mystery Oil. This forum was selected by a website

pop-down.

Just bought a 1990 Ford Bronco II w/ 2.9 liter 6 cylinder.

Have read HORROR stories of the ticking, and false oil

pressure readings along w/ CRACKED CYLINDER HEADS,

via the internet. (searched on Google for these stories).

Seems that there are good and bad stories.

Had the cooling and transmission flushed.

Engine ticks! According to Chilton, rocker arm assembly

can be adjusted. Having this done 11/30/04.

But must say, (vehicle has 76k), this is a fun vehicle.

Put some money into this to baby it along.

Looking to add some good oil to the engine to help it

along. Pure synthetic is not recommended by "my"

mechanic. A Ford mechanic suggests Castrol. So I am

taking the middle road, and getting Castrol "High Mileage"

blend, but hoping to add 1 quart of Marvel Mystery Oil to

this mix. Hence this whole forum adventure.

Will pursue to see what you and others have written

on the mystery of Marvel Mystery Oil.

Thanks!

Mike D.:welcome:
 

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synthetic oil

Hello,

I sure don't know why your mechanic would not recommend synthetic oil. I am a mechanic at a gm dealership. As long as the rings are good and seated in the motor i have had nothing but good results with synthetic.
If you have a high mileage motor and don't live in extremely cold weather i may look in to going to a little thicker synthetic as well.
 

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Discussion Starter #3
Thanks for writing.

The mechanic(s) suggest that since synthetic is so good, it

might find its way through seals and actually get through the

(pistons?), and actually cause the synthetic to burn!

Putting in Castrol High Mileage blend today. Since this oil is

supposed to seal, maybe i will change the oil in 1 month, and

put a thick blend of synthetic in.

Any suggestions on the manufacturer of synthetic?

Also, one web post suggested a Lucas mixture of exact

proportions with 4 quarts of Quaker synthetic. (He has the same

vehicle).

Thanks again for your time and professional input.

Mike D.
 

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the ticking is your hydrolic lifters, my 88 B2 with a 2.9 had the same problem, never went away, and the thicker oil did help a bit. The 1990 is a better engine, your's should have the thicker heads than in 89 and prior. They had a tenancy to crack, but they got smart and thickend up the head for the last year of production. If you want the noise to stop, change the lifters, push rods, and make sure the rockers are seated right.
Shaun
 

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Hei 71 Mav.

Are you the guy I met on the NJ parkway years back?

You and I were driving Mavs.Mine was Anti establishimint green,lowered,Magnum 500s,number 501 on the doors.

Paulo
 

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Mav Man

Nope.In fact I left the States in '99 and left mine there.I believe it was stolen in Goshen NY about 3 years ago...

Now I do own another Maverick,Brazilian built,and a classic since it is was road-raced in '74 and '75 down here.It is in terrible shape but I will get to it one day.

There is an excellent club with the Maverick Connection in WV.
I strongly recommend.
 
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