Fitting an external trans oil cooler to a 504 - questions

Pug72

Active member
Fellow Frogger
Joined
Feb 11, 2013
Messages
537
Location
Brisbane
Hi all

The plan is to fit a VL Commodore alloy radiator and an external trans oil cooler. Auto is the original ZF3HP20.

Two questions:

1. Should the separate oil cooler be mounted as low as possible so the oil will flow better to/from the transmission?

2. Given that my driveway is on an angle and at night my 504 is parked with the front higher than the rear, do I need to install a one way valve onto one of the oil hoses to prevent all the oil in the cooler draining back into the transmission and overfilling it?

Thanks
 
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