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Old 10-31-2009, 02:54 PM   #1
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Default Is it bad to leave fuel iin car?

I have an nitro rustler and I just got a new engine and I started to break it in but it started to rain. I finished break in process 1.
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Old 10-31-2009, 03:01 PM   #2
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I would replace the fuel.
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Old 10-31-2009, 03:26 PM   #3
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It takes more than 1 night to rust the insides of an engine, just fire it up tomarrow and run all of the fuel out of the engine.


If you run Sidewinder or Byrons you'll have little to worry about.
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Old 10-31-2009, 03:30 PM   #4
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couple days MAX then you'll want to dump it....it will work...but ove time Will have slightly less power due to a lesser nitro content.
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Old 10-31-2009, 03:38 PM   #5
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Not only that, but nitro fuel is very hydroscopic. It absorbs moisture very readily. This will lower performance and intrduce moisture to engine parts. You probably be chasing a tune for nothing while that fuel is in the tank. If its been more than 12-24 hours throw it away, even then it CAN be problematic. One of the reasons why you are supposed to use after run oil is due to the fuel left in the engine attracting moisture and rusting the internals. Nitro is much worse than gasoline about that.
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Old 10-31-2009, 03:58 PM   #6
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I use after run oil only if its going to be longer than a week before I fire it up again. Otherwise no probs here.
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Old 10-31-2009, 06:55 PM   #7
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+1, I've even read that some think that after run oil is actually bad for your engine if you aren't storing it longer than a couple of weeks. Something about being bad for the bearings.
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Old 10-31-2009, 10:51 PM   #8
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Quote:
Originally Posted by sickpuppy1 View Post
Not only that, but nitro fuel is very hydroscopic. It absorbs moisture very readily. This will lower performance and intrduce moisture to engine parts. You probably be chasing a tune for nothing while that fuel is in the tank. If its been more than 12-24 hours throw it away, even then it CAN be problematic. One of the reasons why you are supposed to use after run oil is due to the fuel left in the engine attracting moisture and rusting the internals. Nitro is much worse than gasoline about that.
why post something thats not true. you need to state thats your opinion. our gas WILL NOT go bad that fast in our cars just sitting in a sealed tank, you dont want it sitting there for months but leaving fuel in a tank for a week or two wont hurt anything. I for one leave the fuel in my car. I race every weekend. I have never had any problems in the year ive been doing this, there has been times it sat there a month before i raced again no issues.
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Old 11-01-2009, 05:15 AM   #9
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I allawys try to pull my car in and run that last bit of fuel out while the car is sitting wheels up on the pit wall or my starter box.

That way the engine is nice and dry. No rusty alcohol on my bearings. byrons is pretty good at not rusting stuff. Morgans Sidewinder absolutely prevents rust like nothing I've ever seen. I don't even use ARO ever when I get to run Sidewinder.

The only time I use ARO is when my car get stroed for the winter. Before I box it up I rebuild the whole car including a complete engine teardown and lube its guts with RB ARO by hand.

ARO isn't very nice if it gets on your glow plug element or into your carb needles. Can mess up tune.
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Old 11-01-2009, 08:31 AM   #10
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This is what I use.



I use it for engine assembly and if the engine will sit for any period of time.

You could use Mineral Oil from a pharmacy.

I always run it out of fuel. It's fine like that for a short time. After that I use the above.

If your not going to use a engine for a while. Lube it and put it in a zip lock bag. Then trough some of those packs that come with shoes and electronics in. It will absorb moisture. Through the pack in the microwave ever once in awhile to dry it out again.
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Old 11-01-2009, 08:59 AM   #11
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Whats the difference between gas sitting in your tank and gas in the can/jug ?
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Old 11-01-2009, 09:09 AM   #12
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Quote:
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Whats the difference between gas sitting in your tank and gas in the can/jug ?


tank isn't 100% air tight...where as a Jug is.
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Old 11-01-2009, 03:09 PM   #13
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as far as fuel setting in the car or fuel bottle I had it explained to me
like this if you left a open beer setting out over night would you drink
it? NO so why would you make your expensive mill drink old fuel
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Old 11-01-2009, 03:55 PM   #14
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Quote:
Originally Posted by cary View Post
as far as fuel setting in the car or fuel bottle I had it explained to me
like this if you left a open beer setting out over night would you drink
it? NO so why would you make your expensive mill drink old fuel
I hate open beer. They are only good for so long. Thats a great way to put it.
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