OK, so while Im at it.............
as I mentioned this is a 99 with the cummins motor, auto, 2x4, crew cab, Ive put all 195K on it. Ive noticed the last year or so, that as soon as I start the truck up it takes longer for the oil pressure to show on the gauge. I have not put a mechanical gauge on it yet so I dont know if its the sending unit or really the oil pressure. occationally it will take long enough that the dash will ding @ me & tell me to look @ the gauges. almost as soon as it does ding, the needle will shoot up.
the presure seems to be right where it has always been (both @ idle & running down the road).
one thing that I noticed changing the oil the other day was that the oil filter was only 1/2 full. then it occured to me that it has been like that for @ least 4 oil changes. I noticed it when I dumped the filter out to drain it when I was done with the oil change. Ive only used Wix filters since about 50K, but Im on my second fleetguard & there is no difference.
so............. any thoughts?? I was going to take apart the oil bypasses & clean them & check them out.
thanks
Bob