Motorsports Village

Methanol Engine Oil
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Author:  tuffxf [ Mon Sep 10, 2012 4:14 am ]
Post subject:  Methanol Engine Oil

I posted this on a couple of other sites as well,
A basic question here i suppose but with an oil that you are using with methanol fuel do you want the fuel to seperate from the oil or for some of it to be held in suspension?
The reason i ask is i have some brad penn, some tr1 torco and some fuchs formula 60.
I put 10ml of each in a medicine cup then added 5 ml of methanol on top,
I mixed them all equally and let them sit.
The torco showed a definite line between the oil and fuel and the alcohol sat on top and evaporated, the brad penn was similar but the line between the two was slightly coudy, but the fuel evaporated also.
The fuchs oil looks cloudy and looks like it has absorbed some of the fuel, the bulk has evaporated but it is still a bit over 10ml left with the oil obviously holding some alcohol.
What do you want with a methanol oil?
I'm thinking you want the two seperate so the meth sits on top and the pickup only sucks oil, then as it heats the fuel boils off,
Is this the correct way to look at it or what?
Probably a very simple question i'm just not sure?
Thanks very much!

Author:  shrinker [ Mon Sep 10, 2012 4:38 am ]
Post subject:  Re: Methanol Engine Oil

In a running engine the thrashing around isnt going to allow the methanol and oil to separate like in your tests. But it would be useful to have that feature when the oil sits in a hot engine.

Author:  Ken0069 [ Mon Sep 10, 2012 9:25 am ]
Post subject:  Re: Methanol Engine Oil

Probably best to not have much fuel contamination to begin with. THAT is one reason I don't care for mechanical injection. Methanol carburetors don't "usually" have that much of a problem with fuel in the oil contamination.

Author:  tuffxf [ Mon Sep 10, 2012 2:55 pm ]
Post subject:  Re: Methanol Engine Oil

G,day Ken and Bruce,
100% on not getting the fuel in there to start with, i'm pretty right in that department, warming up from cold is the worst deal but i have a lean out and it works pretty good.
I was just thinking about the whole oil deal with methanol and wondered how it should work?

Author:  Ken0069 [ Mon Sep 10, 2012 6:42 pm ]
Post subject:  Re: Methanol Engine Oil

I run 15w 50 Mobile 1 V Twin synthetic and I run it a LONG TIME between changes, ie, oil in my engine now was put in winter before last when I drained the break in oil out. I had the pan off in August of last year when I put the engine in the dragster but I did put the same oil back in but with a new filter.

Only problems I've seen in the past is that there is some kind of sludge that forms in the bottom of the pan over time and I don't ever remember seeing this stuff when I ran gas? At the end of this season I'm going to try draining the sump while it's still hot after a race to see how much of the crap is still in there afterwards.

I have found that if you leave the oil sit in milk jugs for a couple of weeks that most of the crap tends to settle out so I have poked a hole just up from the bottom to let that "good oil" out and put it back in the engine.

If memory serves I think I remember some instructions that came with my BLP belt drive pump that said to use synthetic oil in the pump between races so I "assumed" that there's some compatibility issue with regular dyno oil. :-k

Author:  ADAMSVEGA [ Wed Sep 12, 2012 5:08 pm ]
Post subject:  Re: Methanol Engine Oil

that would be like 5 qrts of oil and 2.5 qrts of methanol .
think thats not a valid test .
only so much solvent of any kind can be suspended in an oil base .
different additive can help this or hurt its ability .
brad penn had one oil that was not for any alky use .
issued statements and warnings.
most the problem is the vapors can absorb a large amount of h2o and condensate back into the pan .ant this point it become a homogenous mess and wipes out bearings .
using vacuum pump or a ducted fan on the puke tank pulls a constant flow and keeps your oil happy .
i experimented with 3 cpu fans on the bottle vent from the v/cover breathers and it was perfect .
now the second edition is a bilge vent fan on top of a new 3" stand alone breathe /puke tank combo to mount on firewall ..i'll send picks of final assy. for you alky guys to copy ....its real cheap !

Author:  tuffxf [ Wed Sep 12, 2012 10:28 pm ]
Post subject:  Re: Methanol Engine Oil

Pictures would be awesome!

Author:  ADAMSVEGA [ Fri Sep 14, 2012 8:30 am ]
Post subject:  Re: Methanol Engine Oil

tuffxf wrote:
Pictures would be awesome!
cut bottom of bottle off and mounted a -12an tank bung to top
(now bottom/upside down, cap is drain)
filled it with stainless steel scrubby pads and clapmed the fan on top .
cut bottom off the illegal push in breather to clamp to fan
im about 1/2 way done running to the depot for hose and 3" coupler clamps today

Author:  ADAMSVEGA [ Fri Sep 14, 2012 8:35 am ]
Post subject:  Re: Methanol Engine Oil

the bottles are at the dollar store.
so if this is a failure i'll ditch fan and double them up as remote breathers

Author:  Mike Croley [ Thu Sep 27, 2012 11:57 am ]
Post subject:  Re: Methanol Engine Oil

Methanol isn't a very good lubricant , so ideally you want the methanol to separate out of the oil and stay below the oil pick-up. Can't hurt to dream.
What really makes a good oil for methanol use is the ring seal characteristics. There is a big difference between brands when it comes to keeping methanol from washing past the rings and into the pan.

Author:  us7race [ Mon Dec 10, 2012 9:18 pm ]
Post subject:  Re: Methanol Engine Oil

I run Rotella T 15-40 no issues with using it. I normally change oil every 4-5 races and I run Alcohol Injection.

Author:  Lone Gunman [ Tue Feb 12, 2013 12:25 pm ]
Post subject:  Re: Methanol Engine Oil

I just pulled the pan on my methanol carburetor powered engine and took a short video of the sludge that seems to be common with this fuel. You'll see the stuff running out into the drain pan and BTW all of it wont drain out either without some kind of solvent being put in to wash it out. I measured it and it was about a quarter inch deep.

This movie is .MOV format and requires Quick Time Player to view it. Sludge Movie

The pan was off and cleaned out in the fall of 2011 and the engine had about 80 passes on it since then. The oil was drained while the engine was still hot so some of the gook was probably taken out at that time. And BTW, I've seen this with EVERY oil brand I've ever run, ie, Brad Penn, Synergyn, Valvoline and Mobile 1 V Twin.

So looks like if you're going to run methanol then the pan needs to be removed annually at least to clean out the crap.

Oh, and I've never seen this in a gas powered engine?

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