Best solvent for parts washer?

ForceFed70

That's why they call it "dope"
Founding Member
Dec 6, 1999
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BC Canada
Got a parts washer for Christmas and was wondering what the best solvent to use is?

Does brake clean come in gallon jug size? Seems to work great out of the aerosol cans.

I've also been told varsol (is this a type of paint thinner) and laquer thinner also work well.
 
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Check to see what kind of solvent your parts washer is designed for. Some are made to use a water/soap/degreaser fluid and using a petroleum solvent may cause a problem with the pump.

Brake Kleen is too "hot" for a parts washer, and will evaporate too quickly. Some types of brake cleaner are extremely flammable.

I have always used mineral spririts (laquer thinner) and it does a great job. Don't pay extra for the "unscented" solvent. It is usually cheaper to buy it in 5-gallon pails than by the gallon. Like everything else, solvent has just about doubled in price over the last year or so.
 
I was looking at laquer thinner while at Walmart today. $15/gallon... ouch! Looks like it's going to cost me $50+ for solvent.

The manual said to only use petroleum based solvents.
 
I ordered a 5 gallon can of solvent from a machine tool supply company out of Nevada. It did cost me $50 (shipped to my door), but I am still using it and still have a few gallons in the can. The worst part is I have to store the extra solvent (as opposed to being able to just run down and buy more), but that is part of living in California. The company I bought from was Elco Manufacturing phone (775) 788-7300. They do have a web site, but I couldn't find it on my initial search. They will send you a catalog every few months after you order--they have tons of quality machine tools and machinist supplies.

When I first got my parts washer I looked all over for solvent for it. Everywhere I went here in SoCal I was told it was not available. I initially bought some concentrate where you dilute it--totally worthless and waste of money.
 
Painters usually refer to a "cheap" laquer thinner for cleaning their paint guns, not for mixing with paint. This is mineral spirits.

I buy mine at Lowes in 5gal cans for about $30-$33. It evaporates cleanly, until you get it heavily contaminated. The flash point isn't too high on it, just be careful around any sparks or flame.
 
lacquer thinner (even wash thinner) is not the same as mineral spirits... 'spirits are only one step above common kerosene in the distillation process. thinner is a mixture of xylene, toulene, and sometimes acetone, that has a very low flash point, and as was mentioned earlier, evaporates quickly. it would work well, but my washer is filled with mineral spirits from home depot.
 
As stated above, lacquer thinner evaporates quickly, has a low flash point, will dissolve or ruin paint and is a bitch on your hands. The cost makes it nearly prohibitive.

I have used Mineral Spirits for years to clean parts and it has always worked well.
 
just use naptha, that's most likely what the parts washer was designed for anyway. you can usually get it from fuel suppliers and sometimes even your local service station (not one of the self serve quicky mart places though)