- Joined
- Nov 25, 2003
- Messages
- 16,439
That particular "wholesaler" was feeding you a bunch of bull. The name WD40 came from the 40th version of the formula & it's water displacing properties. If you read the can you will also see that it lubricates & protects which requires an oil base, mineral spirits offer none of those capabilities. Not to mention mineral spirits have a unique smell, which is nothing like WD40.crrcboatz said:A wholesaler for WD40 and other fluids that called on auto parts houses told me years ago that WD40 stood for WATER DISPLACEMENT 40%. NOW the other 60 % was and hang on to your hats MINERAL SPIRITS. HE said he would NEVER store something long term with it !!!!! After that I decided to mix MMO and air tool oil 50/50 and use it for flushing. I do use the WD 40 to spray into the cooling heads.
Regards Curt
Also you really shouldn't use Marvel Mystery Oil as an after run, be it pure or mixed. It leaves a residual film that is not to good for your internals. One place it does work well is to dip your head bolts in when reassembling, that coating helps keep them set. Thank Rod Geraghty for that little tip years back.