whiplash willy
Veteran Member
I had been tracking the frequency of my DPF active regens for a couple of months. I noticed that my regens seem to happen about ever 200-300 miles. I believe that is more frequent then most.
From myturbodiesel.com's DPF Thread
Since I have more frequent Active Regens then the average person, should I be concerned about increased oil dilution?
To make matters worse, I am in oregon that has mandated 5% Bio in their diesel. Biodiesel has a higher flash point and contributes to a higher rate of oil dilution. Using B5 and my more frequent Active Regens, worries me a little about my oil dilution at 10,000 miles.
From the following article:
http://www.biodieselmagazine.com/articles/2290/understanding-the-post-injection-problem/
I currently have about 8500 miles on my TDI (CR), with its original oil, and am planning to change it at 10,000 miles. I will be sending an oil analysis to Blackstone Labs at 10,000 miles. It should be interesting to see what they find.
Also, I wounder what it is about my driving that causes such frequent Active Regens.
From myturbodiesel.com's DPF Thread
It is my understanding that active regens cause an increase in oil dilution, due the late cycle injection, which can get absorbed by the cylinder walls.The active regeneration "self clean" occurs when filter soot loading is beyond 45% or every 466-621 miles
Since I have more frequent Active Regens then the average person, should I be concerned about increased oil dilution?
To make matters worse, I am in oregon that has mandated 5% Bio in their diesel. Biodiesel has a higher flash point and contributes to a higher rate of oil dilution. Using B5 and my more frequent Active Regens, worries me a little about my oil dilution at 10,000 miles.
From the following article:
http://www.biodieselmagazine.com/articles/2290/understanding-the-post-injection-problem/
So 50% oil dilution will start causing premature engine wear. The standard driver using B5 will have 45% oil dilution at 10,000 miles. If my Active Regens are happening about twice as often as the standard driver, my guess is that I will have >50% oil dilution at 10,000 miles.A New Understanding of Biodiesel's Dilution Effect
Volkswagen is using post-injection for regeneration and according to Stuart Johnson with the Engineering and Environmental Office of Volkswagen Group of America, the issue of oil dilution from biodiesel is a real concern for the automakers. "We can tolerate up to 50 percent fuel mix in the oil but no more," he said at the 2008 National Biodiesel Conference.
Volkswagen tests using B5 and post-injection showed 45 percent oil dilution after 10,000 miles, but surprisingly no engine damage was evident upon inspection. "Using B10 at 10,000 miles surpasses that 50 percent threshold-and that is unacceptable," Johnson said. "We want longer oil change intervals as a car company, so it's hard for us to talk about this." The implications are that increased fuel dilution due to biodiesel blends could lead to premature engine wear if oil changes are not done more often.
I currently have about 8500 miles on my TDI (CR), with its original oil, and am planning to change it at 10,000 miles. I will be sending an oil analysis to Blackstone Labs at 10,000 miles. It should be interesting to see what they find.
Also, I wounder what it is about my driving that causes such frequent Active Regens.