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katy · 06-18-2019, 10:09 AM

I've heard of those valves being lapped using toothpaste for an abrasive.
If you do a google search for toothpaste abrasiveness you'll see that toothpastes vary a lot.

06-18-2019, 10:09 AM	#7
katy Senior Member Join Date: Jun 2015 Location: Red Deer, Alberta Posts: 5,046	Re: Radiator Drain Cock rebuild kits... I've heard of those valves being lapped using toothpaste for an abrasive. If you do a google search for toothpaste abrasiveness you'll see that toothpastes vary a lot. __________________ If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn!