Veggie Oil on a 300 SD - Page 2 - PeachParts Mercedes-Benz Forum

TonyFromWestOz · #16 04-13-2006, 11:33 AM

Quote:

Originally Posted by Panzermann

So, when you run this mix, when do you start the fuel filter changes and how often? And does it require changing both fuel filters, or just the main?

Panzerman,
You only need to change the fuel filters when they start to catch the diesel sludge which biodiesel or WVO cleans from the tank.
I bought some "really cheap" inline fuel filters and installed one before the inline filter near the fuel pump. When the sludge clogged it, I started losing power at WOT and changed it on the roadside. This fixed the problem. A couple of weeks later it clogged again, same story. I found that the filters clogged quicker with a low tank of fuel (more sloshing of the fuel keeping it in suspension), so I drove it with a low tank, but when SWMBO wanted to use the car, I filled it up so she wouldn't be likely to need to change the filter. To be sure, I showed her how to do it herself. There is a stock of (3) filters in the trunk.

After about 3 tanks of Biodiesel the filters stopped clogging up. There is still one there and I have replaced the primary filter and the secondary filter once each since we bought the car. SWMBO has now covered >20 000km on biodiesel (with 50% WVO added) in 2 years.