Quote:
Originally Posted by squirrl22
A friend has an older MB Turbo diesel van, he got it used from a transport company, had a blown transmission, so he got it really cheap. He is planning on putting in a(used) manual transmission imported from Europe. These would get 28MPG on the highway with the auto trans, so he is expecting to get around 35MPG with the manual. Plus, you can easily convert these to run on used vegi oil- This one is the older, IDI engine- I have sucessfully run my VW IDI engines on used vegi oil for over 20 years. You have to be METICULOUS in cleaning the oil, on your install of your system, , ONLY running on vegi when the engine is 100% up to operating temperature, and switching back to dino well before before shutting the engine down. If your meticulous, you can be successful-and, here in NC, you are legally exempt from fuel taxes if you run on vegi.
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Why is he expecting such a huge jump in highway mileage?
The 1st gen Sprinter (1995 - 2006) had a 5 speed manual or 5 speed automatic. The Mercedes 722.6 auto locks the torque converter in 3rd - 5th gears. I can't see a 25% boost in fuel economy for steady state highway cruising from just a transmission swap