Quote:
Originally Posted by babymog
Don't call it yet, Shertex might still find that 2% source to bail the ship.
I've never really investigated the makeup and hardness of diesel soot, would really be interesting to find out how hard it is and other abrasiveness characteristics. It doesn't seems to erode the turbo impeller at any high rate plus soot is re-introduced in the intake without filtration (EGR), seems that if it was tremendously abrasive (like me) it would cause problems in both areas. Just thinking with my keyboard.
If hardness and abrasiveness isn't the issue, then I am left wondering what is?
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Soot has a structure like 3 dimensional chicken wire, its not like graphite, nor diamond, its 1/2 way between. If the particles are big enough, there is a problem. They need to be way smaller than the bearing clearances. If not the bearing becomes like a miniature rock crusher without hard surfaces. The rod & main shells soon get eaten away. The cam/followers & rings/bore also get torn up as they run with no clearance.
The other problem is that it causes the oil to appear as though it has a higher viscosity but when sheared it shows it has a low viscosity. Bad in a cold motor.
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Grumpy Old Diesel Owners Club group
I no longer question authority, I annoy authority. More effect, less effort....
1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles 
1987 250td 160k miles English import 
2001 jeep turbo diesel 130k miles 
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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