Hi,
I'm guessing that the Pump uses Nylon Case or impeller which is not impervious to Mineral Spirits over the longterm. If the Pump is the submersible type (as mine is) just pull it after use and rinse it in water. I have been using Mineral Spirits in mine for over 10 years and the Pump is still fine. Hope this helps...
Happy Motoring!... Jim'99
|