Stephen Daley Posted January 12, 2023 Share Posted January 12, 2023 Hi I went out to the shed today and noticed a oil leak at the rear wheel which seem to be coming from the hub cap / little screw in the wheel hub. is the hubs on a 1925 Buick standard filled with oil and how do I stop this from leaking Link to comment Share on other sites More sharing options...
JFranklin Posted January 12, 2023 Share Posted January 12, 2023 Is it grease or gear oil?. there are seals that may need attention. 2 Link to comment Share on other sites More sharing options...
Stephen Daley Posted January 12, 2023 Author Share Posted January 12, 2023 It’s hard to say it smells like grease but is very thin like oil and the car hasn’t moved in over a week and it’s just started leaking. Just thinking it mite just grease as the temperature is quite hot here throughout the day. so there is meant to be grease in the hubs like most other vintage cars Link to comment Share on other sites More sharing options...
JFranklin Posted January 12, 2023 Share Posted January 12, 2023 The wheel bearing grease needs to stay mostly in the bearings. If the differential is too full or not vented it will migrate to the wheels. The hub cap should not be full of grease. 2 Link to comment Share on other sites More sharing options...
Stephen Daley Posted January 12, 2023 Author Share Posted January 12, 2023 Thanks JFranklin for the advice,I will investigate more when I get home from work cheers 👍🏻 Link to comment Share on other sites More sharing options...
Oldtech Posted January 12, 2023 Share Posted January 12, 2023 There are felt seals between the bearing and the rest of the axle. If these are old they will be dead. Also there IS an oil drain on the inside bottom to keep oil off the brakes. this could be plugged. Link to comment Share on other sites More sharing options...
Mark Shaw Posted January 12, 2023 Share Posted January 12, 2023 Most probable cause is rear end lube is too light (should be SAE 250 or 600wt). Second most probable cause is rear end is too full. Third " " " " is plugged drain tube on the inside of the brake backing plate. 2 Link to comment Share on other sites More sharing options...
hidden_hunter Posted January 12, 2023 Share Posted January 12, 2023 Our 26 also leaked on from the rear hubs until we went through and redid all the grease and lube - from memory there is also a screw that it will weep from I'm not entirely sure why Buick didn't go with the same approach as Cadillac and use a 3:1 ratio of 600WT to Grease Link to comment Share on other sites More sharing options...
Mark Shaw Posted January 13, 2023 Share Posted January 13, 2023 (edited) 3 hours ago, hidden_hunter said: I'm not entirely sure why Buick didn't go with the same approach as Cadillac and use a 3:1 ratio of 600WT to Grease In 1925, Buick did use the 600wt equivalent lube oil in the rear end. Edited January 13, 2023 by Mark Shaw (see edit history) Link to comment Share on other sites More sharing options...
hidden_hunter Posted January 13, 2023 Share Posted January 13, 2023 1 hour ago, Mark Shaw said: In 1925, Buick did use the 600wt equivalent lube oil in the rear end. and it's loads of fun filling it... hands get a good work out squeezing it out of the bottle! 1 Link to comment Share on other sites More sharing options...
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