Question for all my O/O's educated in mechanics.

So i just had my bull gear and compressor gear on my 02 Fld120 Detroit 60 series replaced.

Compressor gear was damaged pretty bad (all teeth where pretty much grinded off) so i took it to my mechanic who is pretty good at what he does. when he took the timing cover off that thing was FULL of all the metal chunks and shavings. so today he proceeded to drain the oil and drop the oil pan to see how much of the metal shavings fell down there. when he took the oil drain plug out it had some nice good chunks on it since its magnetic. then he dropped the oil pan down and there was really nothing there but when he ran his fingers through the coat of oil that was still in it he felt the little metal particles so i put my hand in there and yes you can feel the small Sandlike metal particles in there.

so basically he told me that he believes there was some of this sandlike particles sucked up by the oil pump and thrown into the system. he told me in order to make sure that this motor is 100% NOT contaminated it would have to be fully over hauled. But he knows i dont have that kind of money so i told him what other options do i have??? he told that another option was to drop the bell housing that goes between transmission and motor, clean that out really good if any metal particles are found there, also said he would takh out air compressor out and clean that throughly and also take out oil cooler and do the same. after that is done he would put half (fresh) oil and half deisel in engine and crank it, let it run for just a few minutes, then drain oil to inspect oil for metal particles. And would repeat that process till he believes there are no more particles in oil.

He also said after all this was done he could NOT garuantee that all would be yaking IF there was any left in the engine. So another mechanic told me that with that LITTLE shavings found in the oil pan he should just run the truck a couple times with half oil and half deisel until clean and it was good to go.

So what do you guys think??? Mechanic wants my money or is telling me the truth?

And if he sounds pretty straight foward then what are the chances of me messing up that engine if i dont take it completly apart to clean it??? Any input would most defenetly be taking into consideration. thanks guys really love this forum for the short time ive been on it.

PS. He's charging me $1,000 extra to drop down bell housing and those other components i mentioned earlier he would be checking and cleaning out. all labor no more parts are needed at this point. he already charged me 1,200 to replace bull gear and compressor gear and for oil pan and all hes done so far. paid 700 for bullgear and compressor gear up front as well.

 

Thanks man really appreciate the input. Thats really what i was thinking too. why would one need to drop down the bell housing if thats what those filters are made for.

As for changing the filters should i change the oil with it or only filters after those first couple thousand??? And where should i be getting the sample from??? filters oil or drain plug oil???

 

Yeah ive heard of people doing the deisel/oil mix to clean that engine a little bit after oil changes to get that remaining (old) oil out of there.

Also when u speak of bearing caps i think he pulled one off for me, not sure. Are they like a "C" shaped metal piece??? if so that thing was brand new looking it only had some small lines on in that kind of just looked like the metal was fading or getting dull, does that make any sence??? but u could not feel any groves on it of any sort. felt really smooth and even.