Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion What fluid can I use in pump?

I would use an ISO 5 spindle bearing oil as this viscosity is very close what diesel fuel is and you can mix in some dex merc atf 3 to make it red. It won't take much ATF to turn it red so I would mix in a 1 to 10 ratio. This will give you the right viscosity, color and also have the rust inhibitors to keep the inside free of rust. This is what I plan on doing.