In October 2004, I treated one of our fleet tractors with XADO diesel treatment. At the time of the treatment, the tractor had almost 1,000,000 miles on the engine. The engine had never been overhauled or had the bearings replaced. The engine did have excessive blow by, as it would leave a puddle of oil under the engine when it sat and idled for any period of time. This is the reason I decided to treat the engine, just to see if the XADO material would work on this engine.
The tractor arrived from McAlester and the shop mechanic and I treated the engine with four tubes of diesel treatment. The engine is a N14 Cummins and takes approximately 40 quarts of oil at the oil change. The driver reported that the oil pressure increased approximately 5 PSI after the first treatment. The increase in oil pressure remained constant after the first treatment.
The second treatment was done the following morning when the tractor arrived in Oklahoma City, from McAlester. We added four tubes of treatment and the tractor returned to McAlester. On the third day, we treated the engine for the third and last time. The interval for the treatments was a little longer than prescribed, for it is approximately 270 miles round trip from Oklahoma City to McAlester.
After the third treatment, we just watched the tractor every day. After two weeks, I had the engine and bottom of the tractor steam cleaned to determine if the blow by had been decreased. To my surprise, the blow by was totally eliminated. The engine no longer left a puddle of oil while idling, but there was also no oil on the bottom of the engine and transmission caused by the blow by as the tractor was driven down the road.
The oil and filters were changed after 5,000 miles of use after the engine was treated. The tractor was driven as normal for approximately three months. The engine oil pressure was the same as it was after initial treatment.
In mid December, I had the tractor put in the shop and had the rod and main bearings removed and replaced with new bearings. The mechanic wanted to know what type of oil and oil additive I had been using, for he had never seen anything like the oil that was in the engine. The lower main bearings did show wear from the original 1,000,000 miles, but you could not feel the ridges or roughness in the bearings that you would normally expect. There was and is a coating on the bearings that is very smooth. The coating can be scratched, but polishes back to a smooth finish just by rubbing your fingers or a rag across the finish.
In fact, I did use the back of my Buck pocket knife to rub across the finish of the bearings. It did leave a scratch in the coating finish but would wipe off with a rag. I came to discover that the scratch was made by the loss of metal from my knife blade and not the bearing. The coating is harder than the blade in my knife.
The tractor arrived from McAlester and the shop mechanic and I treated the engine with four tubes of diesel treatment. The engine is a N14 Cummins and takes approximately 40 quarts of oil at the oil change. The driver reported that the oil pressure increased approximately 5 PSI after the first treatment. The increase in oil pressure remained constant after the first treatment.
The second treatment was done the following morning when the tractor arrived in Oklahoma City, from McAlester. We added four tubes of treatment and the tractor returned to McAlester. On the third day, we treated the engine for the third and last time. The interval for the treatments was a little longer than prescribed, for it is approximately 270 miles round trip from Oklahoma City to McAlester.
After the third treatment, we just watched the tractor every day. After two weeks, I had the engine and bottom of the tractor steam cleaned to determine if the blow by had been decreased. To my surprise, the blow by was totally eliminated. The engine no longer left a puddle of oil while idling, but there was also no oil on the bottom of the engine and transmission caused by the blow by as the tractor was driven down the road.
The oil and filters were changed after 5,000 miles of use after the engine was treated. The tractor was driven as normal for approximately three months. The engine oil pressure was the same as it was after initial treatment.
In mid December, I had the tractor put in the shop and had the rod and main bearings removed and replaced with new bearings. The mechanic wanted to know what type of oil and oil additive I had been using, for he had never seen anything like the oil that was in the engine. The lower main bearings did show wear from the original 1,000,000 miles, but you could not feel the ridges or roughness in the bearings that you would normally expect. There was and is a coating on the bearings that is very smooth. The coating can be scratched, but polishes back to a smooth finish just by rubbing your fingers or a rag across the finish.
In fact, I did use the back of my Buck pocket knife to rub across the finish of the bearings. It did leave a scratch in the coating finish but would wipe off with a rag. I came to discover that the scratch was made by the loss of metal from my knife blade and not the bearing. The coating is harder than the blade in my knife.