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Why is the abnormal number @330 for copper on the oil analysis??

With copper, tin, alum. and lead @0 ppm with 86,000 miles on engine with the same oil in the engine for 14 months?

Looks like a voa, to me. I would send sample to another lab.

Before changing the valve gasket, I would run a flushing solvent to clean-up some of that gunk that is in this motor.

Johnny a salesan demonstrated that test to us about 8 or 9 years ago. In our industry we are looking to protect our equipment against the corrosion in harsh, corrosive enviroments ( salt water and very high acidic water). We presently have very little problem with corrosion or water wash out. We...

We always used King Oil Weatherproof grease (Calciul Sulfonate) on all of our vehicles and equipment. The moisture resistance of c/s grease can be easily demonstrated. Apply a thin layer of c/s grease to a freshly sanded or ground piece of steel and allow it to remain outdoors in rain for a few...

although the most popular grease is a lithium, I found the best all around performance grease is a calcium sulfonate. It is characterized by exceptional corrosion protection, high dropping point and mechanical stable. It contains no heavy metals or other harmful enviromentally desirable...

When storing grease, keep it up-right instead of storing it on its side. This may help the grease from separation.

I would take into consideration the synthetic fluid that has the most friction modifier and the base fluid would have to be a group IV.

I would stay away from dealer oil changes. Buy your oil at walmart and they will change it for you. As you know by now the dealer, oil distributor and the blender focus on price not performance. I'm sorry I fill the oil in bottles is better quality than bulk lubricants.

Are you sure this is a UOA??

Ford experienced problems with this transmission in the past. Ford had many warranty issues. I am surprised your transmission lasted this long without an overhall. I would do as Donald suggests( transmission flush and a really good synthetic transmission fluid).

Have you tried to push down on the starter/relay switch in your fuse box. It might be loose. I had the same problem with my yukon. You might have to replace that particular fuse or a loose fuse caused by vibration from opening and closing the drivers side door.

I have a 99 yukon with 200,000 miles runs great. The only gauge that I would question is the amp meter, the other gauges are on the money. At high idle my amp gauge is 15 to 16. After warm-up it will register around 14 to 15.

With the proper additives the Group IV oils should perform as good if not better than the GroupIII products.

Amsoil Ow-30 Very good additive package.I would not be scared to use it.

Synthetics have better heat transfer characteristics due to its molecular structuring.

I had to have my drive shaft rebalanced and universal joints replaced. Take it to a shop that works on trucks forget these dealerships for this particular problem.

It could very well be the composition of metals in the pads. The cooler they run the less shutter and as brakes get hot the more shutter you will experience.

Synthetic based oils that use an ester additive will typically consumes oil for the couple of oil changes. After a brief period of use consumption should level off. This is due to the fact that the ester in the formulation works very tenaciously to be part of the metal also froms a film on all...