|
Post by enigmas on Aug 13, 2023 23:56:14 GMT
Heavier viscosity gear oils take-up wear and better protect via a heavier film the working surfaces of the pinion and crown wheel. They are also a multi-grade oil formulated with improved additives. Keep in mind that most rear gear sets in P5s are over 50 years old and have been around the track a few times. The cheapest insurance for a highly stressed component is clean fresh oil.
|
|
percy
Rover Rookie
Posts: 72
|
Post by percy on Aug 14, 2023 6:28:20 GMT
Your call on the oil but 85-140 EP will give better gear protection and creep along the axle casing will be reduced when hot. This combined with a slight underfill, will greatly reduce any tendency to leak through the seals.
|
|
|
Post by lagain on Aug 14, 2023 20:19:47 GMT
Upon removing the half shafts yesterday (neither of which required any hammering to free the shafts from the axle casing!) discovered that one of the O rings had broken up. Was a bit odd in that the ring had broken into several segments some of which remained in the groove and looked like they'd been cut off with a knife. The missing bits were squashed flat against the hub. Don't know how that could have happened and I'm 99% sure I've never had the half shafts out, so must have happened in the first 10 years of the car's life before I owned it. Anyway, new O rings fitted on each half shaft so hopefully my new brake shoes won't get oiled. Sounds as if your O ring had moved when the half shaft was put in, as mine did when I put it back in last year. I found that it had leaked oil into the drum, fortunately not very much, and when I took the half shaft out the O ring was squashed and mangled. I was very careful putting a new one in, but it gets to a stage when you cannot see what is happening and can only hope that it is OK. I actually checked mine today, as I am off to Scotland in September and was pleased to see that all is well. Whatever oil you use in the rear axle make sure that it is GL4 as GL5 may damage the differential.
|
|
percy
Rover Rookie
Posts: 72
|
Post by percy on Aug 15, 2023 10:11:56 GMT
GL5 contains more EP additives (sulfur). This is a modified type of sulfur to ensure compatibility with non- ferrous metals.The Rover diff doesn't contain any brass or copper ( apart from the filler and drain plugs) so it's not an issue anyway. GL5 does offer greater protection. Many manufacturers confirm compatibility in the technical data.
|
|
|
Post by ricky8664 on Aug 15, 2023 11:00:07 GMT
We put a smear of grease in the groove seating the O ring, in the hope it helps it stick in place as we fitted the shaft because, as was pointed out, you cannot actually see the O ring as the shaft is finally slid into place, so cannot be sure it has not popped out right at the end.
Only time will tell if this has worked.
|
|