Best Transmission Oil for 254 cu. inch Engines ?

Old Fogey UKOld Fogey UK Posts: 996Expert Adviser
in HUDSON
What should I use as gearbox oil ?
Is it OK to use an EP type such as Castrol EP90 ? Or should it be a non-EP type such as Castrol ST90 ?

Comments

  • GeoffGeoff Posts: 4,623Senior Contributor
    Handbook states EP90 for summer and EP80 for winter.   You can get a multi 80-90 these days, just make sure it states "usable with copper based compounds" or similar wording.
    If you're stuck in a hole, stop digging.
  • Old Fogey UKOld Fogey UK Posts: 996Expert Adviser
    Thank you, Geoff.
  • Old Fogey UKOld Fogey UK Posts: 996Expert Adviser
    It sounds like Castrol Classic EP90 (which is GL4 specification and said to be OK for brass, bronze and copper components) will be suitable - and easy to get hold of in the UK.
  • GeoffGeoff Posts: 4,623Senior Contributor
    That sounds  fine.  I use Penrite 80W-90 in my Jet and Hornet (both overdrive), and 85W-140 in my Essex, which has straight cut gears.   
    If you're stuck in a hole, stop digging.
  • Old Fogey UKOld Fogey UK Posts: 996Expert Adviser
    I can actually buy the Penrite oil here on the Isle of Wight.
    Anything else would have to be bought online and shipped here - a penalty for living in what is probably one of the most rural and unspoiled parts of Britain ; local availability of whatever  you desperately need is generally zero.
    The stockist is only a couple of miles away from home, so I am off down there later today.

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