alternative fuel?for mech engine?

**flc120** · 08.07.2012

was wondering how would an old cat 425 3406b engine take to be running off an alternative fuel like bio diesel? is it worth it?
i know the newer engines have problems with the elsctronics and clogging injectors how would this work on my old school cat engine?

please dont knock my post just asking.

**aiwiron** · 08.07.2012

Had a 3406b, it loved used fry oil and used peanut oil that had been filtered, 60% diesel and 40% used oil.

**Worthken** · 08.07.2012

Don't want to be devils advocate, but I can't see any problems. It's a mechanical motor with precombustion chambers an direct injection. No sensors no ecm's and what the heck. Give it a try, old motors love the extra lubricant in the fuel.

**flc120** · 08.07.2012

well i knew an oldman who used to run straight burnt used oil into an older volovo WIA with a n14 red top in it that thing is still running lol.

how would you filter this oil? and would it need to be a 60/40 mix? i dont mind trying the issue is were to get it and how to filter it. only fry oil and peanut oil?

also would i need to run a different type of filtration system due to the fact the filter might be more restrictive or less.

**aiwiron** · 08.07.2012

Pre filter the oil with two three micron filters first, I had a good home made system I used.

60/40 mix is easy. for every six gallons of diesel just ad 4 gallons of filtered oil.

No fancy blending needed

**aiwiron** · 08.07.2012

Originally Posted by flc120

well i knew an oldman who used to run straight burnt used oil into an older volovo WIA with a n14 red top in it that thing is still running lol.

how would you filter this oil? and would it need to be a 60/40 mix? i dont mind trying the issue is were to get it and how to filter it. only fry oil and peanut oil?

also would i need to run a different type of filtration system due to the fact the filter might be more restrictive or less.

I did all my own service, no used oil ever went out of the shop unless it was in my fuel tanks.

**Worthken** · 08.07.2012

Originally Posted by aiwiron

I did all my own service, no used oil ever went out of the shop unless it was in my fuel tanks.

JudJ
Just curious did you burn old engine oil or only vegetable oil?

**aiwiron** · 08.07.2012

Originally Posted by Worthken

JudJ
Just curious did you burn old engine oil or only vegetable oil?

Used engine oil, used fry oil, or even diluted gear oil. Gear oil needs a 80% diesel or kerosene to run decent.

Have to watch for clouding in cold weather.

**Worthken** · 08.07.2012

I assume it would have an adverse effect on the service intervals, seeing to the fact that the fuel used has a higher carbon content? how would gear oil influence the lubricating characteristics of the fuel. I can only think that gear oil would be more difficult to burn of than vegetable oil or used engine oil.

**SmokinCAT** · 08.07.2012

B models are not pre combustion engines. I think you would be fine with the B20 that is available around most areas. The only real problem that I have heard of is that engines with older rubber seals in the fuel system may have issues due to the reaction between the fuel and rubber.