Guys,

Following up on autofrost. I bought some of this stuff about 5 years ago because R12 was still quite expensive. A friend of mine recently bought a 75 240D which had non working a/c.

He replaced the compressor as it was seized and put two new hoses one. The replacement was a brand new York compressor and mineral oil was used.

Given that the a/c system was old and there was no telling what leaks would be found (the system pulled a vac but something could happen under pressure), we used my cylinder of R406a instead of my stash of R12.

To my surprise it worked very very well. At idle we were getting around 40 degrees at the vents and on the road, it would turn your fingers blue.

The W115 looks to have a pretty inefficient system with a small condenser which makes this stuff even more impressive.

They do have a disclaimer around seal compatibility on the website which you should read up on if you decide to use this stuff but overall, I think that it's a good product and would use it over the other snake oil alternatives.

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With best regards

Al