I put 90WT gear oil in my RH shift 2000,because the previous owner said he had installed sealed bearings...and soaked it all up with kitty litter when it was on the floor the next day...damn...stinky stuff...so...I pushed a whole tube of grease into a plastic bucket,mixed in about 1/3 90WT gear oil,packed it back into the tube,and injected it into the ALBION gearbox,and have been topping it off with 90WT...it still leaks on hot days,or after long rides...get the sealed bearings...better yet,do the RH shift conversion,AND sealed bearings...you're an Enfield owner,not a Honda Jockey...you can do this...