What do you all know about this stuff as an "oil and fuel additive?

 

My opinion is that it is snake oil and don't use it! Regular gas and a good synthetic oil will be more than adequate!

I have heard bad stories about "marvel-"less" mystery oil.

 

Textbook Caveat Emptor.

 

As Y2K says so cleverly: buyer beware. I also agree with 2000F150Fun that oil and fuel additives are an unnecessary and costly "snake oil" fix for engine problems...

 

I don't know how well it works in Automobiles, but alot of pilots I know use the stuff..

 

That stuff has been around forever. I personally have seen my dad use this for over 40 years. I agree with the others, additives are always claiming to do something. I have owned several cars and trucks I drove over 200,000 miles on conventional oil only. Use synthetic oil and avoid additives like most new car manuals suggest.

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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
4-wheel disc/ABS,Chestnut/Parchment,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.

 

If you have an off-road diesel application and can only get the low sulfur on-road diesel, I heard that you can add Marvel Mystery Oil to the diesel fuel. It helps keep the fuel pump lubricated when the fuel heats up as it tends to do in certain applications, especially in those engines with high return volumes.

 

I used Marvel Mystery Oil in my Acura Legend to free up a sticky lifter...it worked great when nothing else I tried would. I haven't used it in my truck but I would if I had lifter probs.





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'99 F150 SC, 4x2, Oxford white, flareside, 5.4, 3.55 rearend,
bodyside mouldings, Snuglid hard tonneau, K&N dropin, airbox and frsh air mods.
Duraliner drop-in (gave up on the Penda Nascar). Gibson Supertruck. Ford 2-piece bra. Catch-All floor mats. Image tail light covers. B-Quiet sound dampener in rear of cab.
No door cracks yet at 10K!!!

 

I buy it by the gallon (last one $12.95) -- and use it everywhere it *might* help. Used it as a diesel additive. Put it in the gas tank of my Goldwing.

It's probably no better or worse than those 'elephant repellant' whistles that you put on your car to keep the elephants away. Must work -- I haven't seen an elephant since my neighbor put a couple on his car.

Nothing's been hurt since using the Mystery Oil either. Probably doesn't help, but I doubt it hurts.

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Y2K™

Toreador Red, Keyless XLT SC SB 5.4L E4x4 4wDisc/ABS, 3.73LS, Skid, HD 7700# Towing, LT-245's on Chrome, Tube-Steps, Captain's, 6CD, Tonneau, named: "Nick"

 

I read an article on oil additives in a pilot/flying magazine. It claimed that marvel mystery oil was designed in the 1920s or '30s for marvel-shebler (sp) carburators. It was designed to lubricate the internals of this type of carb and the "top end" of the aircraft engines that used them. I think it has no value today as it gumms up the combustion chamber. My friend used it regularly in his ford pickup. in the gas and oil. The engine finally came out for replacement. we took it apart and were surprised at the 3 inch thick soft carbon layer on his pistons and heads. Well maybe not three inches, but very very excessive never the less. And you know what, the engine was totally worn out too! It seems to have done no good whatsoever.

Chris

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98 SC 4.6L stepside, Gibson headers, Gibson single exhaust, superchip, Intake mods, Piaa's, high end audio stuff.

[This message has been edited by cujet (edited 06-18-2000).]

 

I found, like Marv1 that it was the only thing that would stop sticky valves on my '62 Failane 5 years ago (still have it and need to use the Marvel) when that crap gas that they use nowadays didn't set right with the old 221 V8 engine. Tried the Mystery oil as a last resort and it quieted the valves right down.
I also had to use it in my 64 Rambler, when it bent a pushrod from valve sticking (once I straightend out the rod and used the mystery oil it stayed unstuck and now my son continues to use it with no problems). I know, I know....a RAMBLER????
But I also agree that the stuff is no doubt worthless in modern engines designed to run on that no-lead oxygenated fuel.


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2000 Lariat, 5.4, 3:55 L.S., 4wd, ext cab, Tow pkg, Chestnut/Gold, Century mid-hi cap, Ford short bug deflector, contoured Ford running boards and bedmat.

 

Gee, I hadn't thought about that -- makes sense, what with the lean-burn and the ultra-clean gasolines.

As for the ticky tickers -- there's a product that I've used over the years for un-sticking sticky lifters that has worked almost 100% of the time -- it's CD-2 in the oil.

There are at least two types of CD-2 -- with one like motor honey or stp. The one for sticky lifters is the stuff that when you shake the can, it sounds like water.

Works almost instantly on stick lifters.

As an aside, I've only heard two posts (audio) purported to be representative of the infamous "piston slap" -- and, although there may be something that the audio is not pushing thu my aging ears, what I'm hearing is lifter/adjuster lash (excessive). I've heard the same noise as recorded on those two tapes from my Escort -- and changing the oil and cleaning the lifters with CD-2 has fixed it -- with the last I heard it some 15K miles ago (it now has over 130K miles -- and has used Mobil 1 it's entire life hmmmmmm).

I've heard zillions of engines in a wide variety of disrepair -- and have only heard piston slap a hand-full of times.