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Forum: Diesel Discussion

05-01-2008, 02:37 PM

Replies: 66

Mobil done it again - changed Delvac-1 and Mobil-1 formulas

Views: 7,058

Posted By DieselAddict

Soot and TBN are important but I think the best...

Soot and TBN are important but I think the best way to establish a drain interval is by watching the wear rate, particularly in terms of iron, lead and aluminum. As long as the wear rate is good,...

Forum: Diesel Discussion

05-01-2008, 02:25 PM

Replies: 66

Mobil done it again - changed Delvac-1 and Mobil-1 formulas

Views: 7,058

Posted By DieselAddict

This is API's official word on the CJ-4 oil...

This is API's official word on the CJ-4 oil standard:

Forum: Diesel Discussion

05-01-2008, 02:15 PM

Replies: 66

Mobil done it again - changed Delvac-1 and Mobil-1 formulas

Views: 7,058

Posted By DieselAddict

For one of my UOA's of Red Line 5W40 from my...

For one of my UOA's of Red Line 5W40 from my Jetta I paid for the TBN test. The original TBN was 7 and after 5K miles it dropped to 5.3. All the TBN does is counter acids from combustion and...

Forum: Diesel Discussion

05-01-2008, 12:59 PM

Replies: 66

Mobil done it again - changed Delvac-1 and Mobil-1 formulas

Views: 7,058

Posted By DieselAddict

The newer engines supposedly dump more soot into...

The newer engines supposedly dump more soot into the oil because of higher EGR rates, at least that's what I've been reading. Either way CJ-4 is supposed to handle soot and heat better than any...

Forum: Diesel Discussion

04-30-2008, 08:16 PM

Replies: 66

Mobil done it again - changed Delvac-1 and Mobil-1 formulas

Views: 7,058

Posted By DieselAddict

I would not worry about using the new CJ-4 rated...

I would not worry about using the new CJ-4 rated TDT oil in any diesel engine. It should perform at least as well as the older formula if not better. I also used to be skeptical about the recent...

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