From the lbcarco web site:
04/10/05 Fill your Steering Rack with Oil
Our Tech Tip this week is from Wayne Hardy.
Here's one more that will be of use to operators of older LBCs (like my '58 MG Magnette) that have the grease zurks on the rack and pinion tube for adding that all important 90 wt. oil, (never grease) to the steering. Your Quick Lube places don't have the means to add oil through their grease gun. At Wal-Mart, or your favorite outboard boat and motor shop, you will find a little pump for topping up or changing the oil in the outboard motor lower unit. The pump is made to screw right into the usual 1 quart plastic BOTTLE of oil, and it fits the bottle of 90wt. rear axle oil perfectly, (yes this is what MG recommends for the steering). Then go to the auto parts place and buy a discharge end fitting with short solid tube for a grease gun; the standard end, not the needle fitting. The discharge end of the pump can be removed (it's made for an outboard motor) and the grease gun tube inserted in its place with a very small hose clamp to hold it in the pump's plastic tubing. This will then allow you to pump the correct oil from the bottle into and through the grease zurks on your rack and pinion housing. The Wal-Mart pump costs about $6.00 and the grease gun end about $3.00. The pump is also nice for adding oil to the rear end if you take off the grease gun end and just pump it in. I've always had trouble getting the bottle up & inverted enough to get the oil in the axle due to the gas tank on a "B".