This is Jack again with new question....I want to replace the oil cups on my car with cups that have a zerk fitting in them, instead of oiling every two hundred miles....Will this be sufficient to lube speedometer gears and all....Are their any draw backs to this...I haven't been able to get a positive okay on this, so I'm turning to the best source I have ever seen...Thanks for your positive views....flivver jack

Jack -- It depends upon the application. Some lube points will work fine (even better) with grease applied by zerks, while some will not. One exception that comes to mind is the spindle bolt, which has an oiler at the top of the bolt. Oil is needed here so that it will run down to the lower bushing, which grease will not do. If you want to grease your spindles, you must add another zerk for the lower bushing. Just think about each lube point individually in making your decision. If grease through a zerk will get to the wear points, it should be fine.

Thanks Mike, that would be two oil cups for the two front spindles....right now I have no cups or zerks on many of the lube points I have located...I have a bunch of manuals now, but none seem to go into the detail I have in my aircraft manuals....like following the lube trails as you pointed out...thanks for the heads up, Mike...

flivver jack

There is very good reason that Ford designed some lubrication points for oil and some for grease. Grease and oil work differently.

As far as spindle bolts are concerned, I have seen where people have added zerks to the middle of the spindle in order to "grease" both the upper and lower bushings and it doesn't work like you think it should. The only way you can get grease into both the upper and lower bushings is by pumping some grease in, then jacking the front wheels off the ground and pumping more grease in... Now is that really less work than oiling every 200 miles???

Also in my experience, you can go far longer than 200 miles before re-oiling.

Adam, after reading Mike's letter and checking my car again, I find many of the oil caps missing and, as you both pointed out, it is a lot easier to pump a little oik in the hole than getting the grease gun set up and working....I just wish I hadn't ordered so many large zerks in brass before posting my question on the forum...I learnes a lesson and will slow down a bit...I also learned a lot this weekend when the Tin Lzzie Model T club held it's Christmas party at Steve and Patty's....it adds up to fix it yourself before looking elsswhere....At 82 I thought I learned that leson...Thanks again Mike and Adam for good advice...Flivver Jack