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Old 07-20-2003, 12:30 AM
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1991300SEL 1991300SEL is offline
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Join Date: May 2003
Posts: 545
It makes no sense to me that they would market a set of gauges designed for R-12 and R134A, then include a caveat about avoiding use in systems containing mineral based oils.

Then again, it sorta makes no sense that they would make "bi-gauges" when over time, different oils could conceivably be intermixed.

Here's their customer service URL. I'd ask why their marketing "bi-gauges" and telling you not to use them on systems containing mineral oil.
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