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I'm going to replace the evaporator in my Q45. I still have a decent stash of R12 on hand, so I'll be using that. The sticker under the hood specifies Suniso 5GS Refrigeration oil. This stuff has been difficult to find, but I think this might be a decent replacement...

I stocked up on the 5 quart jugs of Pennzoil Platinum 5W-30 in 2009 when they worked out to $1/qt after rebate, and I've been running it in my truck. Now I have about 2.5 quarts left over. Has the formulation for PP changed since then? If so, I think I'll just post these last 2.5 quarts on...

I can't imagine this hasn't been discussed before - but I couldn't find anything using the search function. If anyone could direct me to some good threads, I would appreciate it. I know the old rule of thumb is 3 months between oil changes, but with today's advanced oil chemistry - what is a...

I bet this has been covered before... probably many times - but I couldn't find it, so if you guys have an opinion or can give me some search terms or links that would be great. My Q has been sitting for 4-6 weeks untouched, and is in need of an oil change. Should I start it up and drive it for...