[Richard]

Newell typically uses Mobil synthetic lubricants. In this application, it is my opinion that it does not matter which brand or type. You can’t go wrong with a synthetic type III or IV. They will be compatible with what is already in the system.

So why all the different types. It’s not quite as bad as the coolant confusion mess, but in the early days of automatic transmissions in cars. The big three all designed auto transmissions that required a different trans fluid to function properly. It had to do with friction properties and the slip clutches inside the tranny. Today, with the advanced transmissions and CVTs, it is best to read the owners manual.

Here is some supplemental reading on the leaking situation. http://newellgurus.com/showthread.php?tid=4604