Engine Failure problems of the 1999 Dodge Ram Van

April 2004 a loss of oil precluded premature engine failure at 46,000 miles in my 1999 Dodge ram 2500 van. May 1, 2010 the replacement engine with 36,000 miles experienced a sudden loss of oil that registered on my oil pressure gauge. Three quarts of oil were required to bring the oil to normal volume. I have continued regular oil changes and engine maintenance. The rebuilt engine I was sold replaced the failed engine. Upon inspection of the failed engine I was told that I followed all maintenance procedures and they could not determine the cause of the failure. I fear this is a re-occurrence of the original problem that will lead and may be inherent in the engines used in this vehicle. Improper lubrication in an engine can lead to premature engine failure. Nhtsa item 610005 and 606035 shows that Chrysler/Dodge knows of a defect in the engine that leads to oil loss.