My owners manual says to grease every 3750 miles. I would do so if there was a zirc fitting, but I can't find it. The truck was built in St Louis and the dealer says the zirc was eliminated. Is this right?
My second question is this. While towing my 5th wheel through Utah today (in tow/haul), when the trans kicked down for a climb, it sounded like the lifters were floating or pinging. This happened twice at about 2500 t0 2700 rpms. Has anyone else experienced this?
Terry