Mystery oil -- 928S4VR Forum

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Date Posted: 07:45:41 12/14/01 Fri
Author: P
Author Host/IP: 66.89.75.42
Subject: Mystery oil
In reply to: J 's message, "Mystery oil" on 05:20:12 12/04/01 Tue

I�ll offer a word of support and a word of caution.

I have a pair of marine 427 Fords in a Chris Craft cruiser, and one engine �may� have had a sticking valve. In any case, it popped badly at 2900 RPM. A very knowledgable aficionado (who owned a Ford dealership) advised me to add an upper cylinder lube such as MMO, and to just run the motor. I did, and it �fixed itself�. Of course, I was all over the motor, adjusting the solid lifters, adding electronic ignition, changing the fuel filter, etc., so I�ll never know what exactly was wrong.

Years ago I had a friend who liked to run his Mercedes at Autobahn speeds on the Pennsylvania Interstate between Erie and State College (Penn State). He added a bit of 2-cycle outboard motor oil, because of the additional lubrication, and the fact that it burned �with no ash� (that oil is intended to burn). I suspect it increased the octane a bit too. He was (is) a real speed freak.

I�m wondering about the catalytic converter working overtime. Mobil has a test posted on the web, where they ran some cars with various oils and compared the results. All cars were run, say 200,000 miles. Of course, the one with Mobil-1 had �no wear�, but some of the others developed �blow-by�, which caused the catalytic converter to be replaced at 140,000 miles. The one with Mobil-1 used the same cat the whole way.

I think TECHRON is an excellent product, however I do think it is great for injectors, and probably bad for cylinder walls. It is a strong solvent, and the cylinders must be taking a scraping when you (I) use the stuff. Using MMO in the gas tank I would wonder about the cat and any ash build-up on the valves, etc.

Since the car has a cat, I�m sticking with premium gas.

P

>I've been restoring an '81 for more years than I'd
>like to admit. I run the car every week to keep things
>lubed up. Being almost done and getting ready for the
>road, I went through the engine and did t-belt, h20
>pump, all fluids,all filters,all belts, alternator,
>tensioner ...too many things to list. Everytime I'd
>go to finish, I'd find something else I just couldn't
>let go. After about 2 monthes and 2 grand, I
>finished. I go to start the car and no fuel pressure.
> The fuel pump (which I replaced last year) was
>getting power but not turning. After messing with it
>for a while it kicked in but was making awful noises
>(I suspect gas had turned to varnish). The car ran
>but was rough and noisy.
>
>I added techron & MMO to the gas and just MMO to the
>crankcase and jumped the fuel pump relay for about 30
>minutes. You could actually hear the pumps tone
>changing over time. Its dead quiet not. Also, it
>appears to have helped the check valve as it holds
>pressure much longer now. I ran the engine and have
>been dialing it in after all the work done. It sounds
>great! How much is the mystery oil, techron and how
>much is "tuning", I don't know, but it does appear
>that I get less injector clatter and the valves sound
>quieter. I can't wait to lower the car and go for a
>blast!

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