How are you guys removing the scum/stain from your outboards? It is kind of like a bathtub ring I guess. Regular soap and water doesn't remove it.
DaleH said:I use liquid "Bar Keeper's Friend" for most of my stubborn cleaning all over the boat and motor.
DaleH said:Some use a toilet bowl cleaner for really stubborn stains, where the active ingredient is hydrochloric acid.
The active ingredient in BKF is oxalic acid, a natural compound (that's found in rhubarb and spinach, believe it or not ... ) that works at a molecular level to break the bonds of stains, like that of rust and lime deposits. BKF is spectacular on a saltwater boat that has stainless steel hardware! But don't use the powered version on fine finishes ...
RaisedByWolves said:Under the cowl, purple power.
The rest the motor isn’t pretty enough to bother with.
Tin Man said:LDUBS.....do any of your motor's plastic parts (cowling and/or below cowling) have hard water stains? If so, any luck removing them?
LDUBS said:I wanted to circle back. The Bar Keeper's Friend (liquid version) that DaleH recommended works great removing the scum stains. Worked on the plastic part of the case too. I only put enough elbow grease into it to remove the water stains so as not to scratch anything. The liquid BKF doesn't seem abrasive, but of course it has to be to work.
Thanks for sharing the pics.LDUBS said:LDUBS said:I wanted to circle back. The Bar Keeper's Friend (liquid version) that DaleH recommended works great removing the scum stains. Worked on the plastic part of the case too. I only put enough elbow grease into it to remove the water stains so as not to scratch anything. The liquid BKF doesn't seem abrasive, but of course it has to be to work.
Got some pics:
View attachment 1
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