has anyone hade any trouble or know of anyone else theat has had this problem. i work for nissan and i am fixn to put in my third v8 in the 10 months ive been there. my truck included. what i have found to be the probable cause is the converters comming apart and back feeding thew the exhaust valves thus pollishin the cylinder walls and wipping out the oil ring causing the engine to start using oil. i noticed that my truck had started using oil. so i changed the oil and caught what i could and there was only three qrts in it. new oil filter and 7 qrts and watched oil concumption. in 2,200 on that oil chang it was off the stick. i pulled the plugs and checke compretion and it was all out. 7 cylinders had 175 and one had 125, the minimume is 192!! when i was changing the motor i found that the drivers converter was completly gone. warrenty paid for my new motor and both converters and i was glad of that. not trying to scar anybody but was wondering if that has happend outside of oklahoma. the first truck i did had 64k on it and it was toed in. mine had 63k on i and was running great. the third one was limped in and is running terable. going to put that one in this wednsday. thanks for listning.:rockon with those bad trucks.