I'd be inclined to think that 90 weight oil added at the frequency you've been doing will find it's way into the speedometer head sooner or later and cause a mess. I use a grease gun ( the same grease I lube the chassis with) with a finely pointed adapter ( available at autostores ) to shoot a bit of grease into the hole opened up by removing that small screw on the underside of the drive. I do it about twice each summer or every 5,000miles. It seems to work as my speedometer is still going. Bruce Benson > What's the best way to lube the angle drive? I've been following the > original factory service bulletin and filling it with 90w gear oil at each > oil change. > > > Thanks > > Mark N > VIN 6820 > > > Before posting messages or replies, see the posting policy rules at: > www.dmcnews.com/Admin/rules.html > > To address comments privately to the moderating team, please address: > moderator@xxxx > >