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Actually a friend of mine claims my expansion valve is s newer type for R134a. He says the ones for R12 has a difference shape and that the blueish sticker said "R134a" when is was readable ? Based on your very appreciated input, I think I will start leaving the EPR valve in place. Then if...

Thanks Dave. I am going to take my chances with the ISO 80 ester oil then as I don't even know if the compressor makes pressure. And of course replace the O-rings and dryer. Is it recommended to remove the EPR valve without adding a thermostat to cycle the compressor? We charged a '69 with...

Last year when I changed the manifold gasket in my '66 Imperial, I made sure to tilt and drain the compressor from the old mineral oil (I THINK it was the original oil - looked like espresso). It's the original RV2. Now I want to re-fill it with ester oil (for compatibility with R134a etc.). I...

I have this exact situation with my Imperial as well. Is it converted to R134a and hopefully had the oil changed to POE? Does it still have the mineral oil from it's R12 days? I tried to extract some oil and mix with water, as I read that mineral oil would not mix and POE would. As already...

THanks Big_John. Do you remember what length belt you ordered?

Great tip! I did something similar last week and thought I was a first mover. I think Continental 49034 is for 0.5" wide belt? In any case, I had ordered the replacement for the original part no. for my imperial from rock auto (FOUR SEASONS 45954). My '66 originally has the narrower belt 0.375"...