Redline TBN -Deisel vs Gas Engine

[buster]

quote:

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i wonder why the tbn stays so high in deisels compared to the tbn we see in gas engines with redline?

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This was brought up by qship1996 in another thread but it does raise an interesting question as to why RL seems to do much better in Deisel engines compared to gas. Only 3 UOA's to really go by in the same engine but the RL 5w-40 seems to be their best oil.

http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=26;t=000088

http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=26;t=000065

http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=26;t=000053

[ December 27, 2004, 08:42 PM: Message edited by: buster ]

 

[TomJones76]

Bigger sump capacities in the diesels?
Diesels don't waste as much fuel at idle, so the fuel contamination doesn't happen?

 

[pezzy669]

Bigger sump does not apply here.

When I change the oil on my '03 VW 1.9 TDI I get out maybe about 4 quarts and put in about 4.25 quarts with the filter change. Similar to other small 4 bangers.