Incidentally, this is the best penetrating oil I have ever used.
Henry Studeman - April 8, 1986

1. Chain oil was replaced once.
2. The chain oil was used approximately 12 times for approximately 2 minutes each.
3. Lower unit oil was replaced several times only because of tower unit disassembly.
4. One chain was replaced because of a link plate showing signs of seizure.
5. Chain oil temperature was approximately 140*F at the end of each run.
6. The chain housing held 3 pints.
Master oil MX 237 performed flawlessly during the operation of the Miss Nickel Eagle Project. With a duplex 40 chain operating at 11,000+ RPM and 190ft./sec, when recommended RPM for the chain is only 1750 and a maximum safe velocity is 30ft./sec, it has to be an excellent lubricant.
F. Darryl Goade, Eagle-Picher Industries - November 8, 1978

Back in 1970 at the Spring Shreveport Gun Show we bought some of the Master Oil, in a plastic bottle and a spray can. We are now in Jasper Texas and have a Gun Shop. We have used all of the Master Oil up and would like some more.
E.E. Mitchell, Mitchell's Gun Shop - November 17, 1973

We are currently using the Master Oil MX 237 product with excellent results.
Randy Callison - November 19, 1982

I had an occasion to use the Master Oil MX 237 penetrant and think it is the best I have ever used.
Charlie Digges - April 14, 1984

Superb oil.
Clem Barrere Jr. - April 4, 1972

The best penetrating oil I've tried yet.
Dan R. Erwin - April 12, 1972

In my opinion, this oil is completely outstanding and far superior to any other I have ever used.
William F. Damon III - November 30, 1970

The MX 237 did a great job in loosening the calcium and desolving the rust in the chain and spreader box.
Paul Khert, Garage Foreman, Indiana State Highway Commission - September 3, 1971

Do you have a testimonial for one of our products? Contact us and we may put it on the website!