Those were in the test and read differently from each other.... How did you know both worked as advertised? Becasue with a 7.5 CFM dual stage vacuum pump. Depending on the vehicle, time of season, temp, and humidity, we would get micron readings anywhere between 400 and 800. I'd ask, what answer ar...

I wonder if anyone on this forum can answer why an MFG of a product did not reach a specific spec. These are questions directly for the MFG of the product, IMO. I'm sure the phrase "laboratory Conditions" will be the response. I also think T-bird is correct on how an MFG would scale a test...

Come on. No one can trust Texans.

Sanden Info is based on oil circulation ratio OCR with 1 to 3 ounces remaining in the swashplate compressor crankcase and cling oil remains in AC components. OCR = weight of oil in circulation at any moment divided by weight of both oil and refrigerant in circulation and varies with operating condi...

Run it through a relay set-up with direct power from the battery. 20/30 amp fuse on the power lead.

While I'll never say don't distribute oil. The speed at which oil is circulated within a system. It would be extremely odd for a loss of oil to damage a new compressor from start-up, in this situation. If you have those concerns, cycle the compressor a few times at startup when charging the system.

I find it odd that all my direct suppliers. Do not carry Micron Gauges, but know them as well. The response would be to get it from the tool store.

Suggest a trusted brand that will more than fulfill your needs.

43-MT1721

You actually raise an interesting question. When I was a shop owner and dealer, we used the machine to recover refrigerant and do the occasional top off. We always used virgin or "new" refrigerant to recharge a system. Most people charge with new refrigerant. Not 100% factual. Most dedica...

In general. Always drain the shipping oil and add back the vehicle spec and type.

This is what is stated now on the big 3 compressor dist listings, and is the standard policy for them.

OIL TYPE
CONTAINS OE COMPATIBLE OIL FOR SHIPPING; PLEASE REFER TO OE SPECIFICATIONS FOR OIL CAPACITY