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Mixing old gas with new gas

maxwedgechar

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So I have my 1990 Subaru Legacy sitting in the driveway blocking Max. I am going to do a minor service on it and the gas is probably 2 maybe 2 1/2 years old. I figured I'd use it's electric fuel pump and pump the old gas into a container. What to do with the old gas? The van, it's a 1992 B350 MaxiVan with a 34 gallon tank, has an almost full tank. Can I occasionally add a quart or two to the tank or is that a no no. With the price of gas these days I don't want to waste a drop!
 
Smell the gas. Bad gas has a smell you can't forget. If it's not bad run it, and if it's bad kill weeds or ants with it. Just my 2 cents.
 
Add gas de-icer to old gas just in case. Add a 2 gallons to a fresh tank. MO After reading 2 above comments if sinks bad junk it.
 
The 92 van will run just fine on a few gallons a tank of that old gas. Burn it.
 
I've owned enough old stuff to know what bad gas smells like. The car still runs on what's in it but not very well that's why I'm doing the minor service and draining the gas.
 
I burned off my old fuel recently blending it at 3-4 gallons into my daily driver, then topping off the tank with fresh gas. No issues
 
I've blended it before too with no issues. Just make sure it's not full of crap. Wouldn't hurt to strain it before pouring it in or run a filter on the line when you pump it out.
 
I had some old gas that turned amber. I mixed it in my lawnmower and it didn't like it at all. I tried using it to start some tree branches and other yard waste in my fire pit. The gas wouldn't burn even when putting a match to it.
The moisture content in the old gas is what I'd be concerned with. The de-icer suggestions sounds like a good idea.
 
I use my old stuff in lawn equipment
I have found that smaller engines do not run well at all on old gas... Mixing it in a car gas tank with alot of newer gas has always been the best solution for me..
 
I had some old gas that turned amber. I mixed it in my lawnmower and it didn't like it at all. I tried using it to start some tree branches and other yard waste in my fire pit. The gas wouldn't burn even when putting a match to it.
The moisture content in the old gas is what I'd be concerned with. The de-icer suggestions sounds like a good idea.
How old was that stuff!?
 
My 63 I do the same as most stated.
I keep the old stuff from the Classic and put a few gallons in my old truck mixing with fresh to use it up.
 
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