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jwmckenzie · 11-23-2020, 01:40 PM

I cleaned my tank with POR15 Cleaner/Degreaser. Mixed it 50% with warm water, Let it set for a day or two. Depending on the amount of sludge may have to re-apply. Works on all types of grease and oil.

The tank was original and didn't have aftermarket lining material. Then followed with some Rust911 to get any rust out. Most of the rust will be on the underside of the top of the tank, so unless you take the tank out, you won't get that rust. Maybe Rust911 won't help that much.

11-23-2020, 01:40 PM	#14
jwmckenzie Senior Member Join Date: Feb 2014 Location: Boston, MA Posts: 213	Re: Remove sludge from bottom of gas tank I cleaned my tank with POR15 Cleaner/Degreaser. Mixed it 50% with warm water, Let it set for a day or two. Depending on the amount of sludge may have to re-apply. Works on all types of grease and oil. The tank was original and didn't have aftermarket lining material. Then followed with some Rust911 to get any rust out. Most of the rust will be on the underside of the top of the tank, so unless you take the tank out, you won't get that rust. Maybe Rust911 won't help that much.