What's the deal with the Ester oil "shot" they refer to when switching over to 134? Does the pre-mix 134 you buy from an auto parts store suffice for sealing and internal lube (aside from the oil compartment itself), or do I really need to fill with 37-38 oz of 134 and then a can of Ester in addition??
I've already upgraded the components and just have to fill the system and pray it works!
Thanks guys!