Discovery td5 engine running on neat hydraulic oil

[leerowdon]

Any body have any info on the long turm effects of running a td5 engine of neat hydraulic oil? apart from the intank lift pump problems.

[Blknight.aus]

hydraulic oil is not supposed to be burnt, the emissions will be nasty and you'd be running the risk of spotting the injectors.

you may find that it wont start easily on hyd oil (if at all) due to the higher viscosity and flash point.

I've tried running fozzy in 2.25 format on hyd oil and couldnt get him to start on hyd oil, but once he was warmed up and running smoothly on veg/diesel could be switched over to hyd oil. Smoked like a demon and was down on power (much lower injection pressures in that engine tho) so I left that oil in the "only if I really had to" emergency use catagory

[leerowdon]

15p Td5 engines have no problems running neat on it ;) just a bit smokey at low revs and a noisy lift pump for a few mins first thing on a cold morning

Just wondering if it will would knacker the engine like kerosine would after a good few thousand miles..

[bsperka]

Similar to running a diesel engine on straight vegetable oil (or biodiesel), you have to consider if it has the right energy, lubricating properties (for fuel pump and injectors), spray pattern (both hot and cold), fuel droplet size, pump ability (measured in centistrokes IIRC) etc, coking index (carboning up) as well as cetane rating etc etc etc.

Whilst to you and me its just diesel fuel, there is a lot of things that diesel does that we just take for granted. We pump it in and burn it, but it needs to have a lot of characteristics within a certain range of limits to be considered suitable for a diesel engine.

I read a book called SVO: Powering Your Vehicle with Straight Vegetable Oil that talks in depth about the characteristics required of a fuel to burn in a diesel engine. It went on for pages - the headings alone would take up about one page, and this is in a book that advocates SVO!! The following url gives some idea of what needs to be considered:
http://journeytoforever.org/biodiesel_svostd.html.

I've read online reports by people who don't care about their diesels who have run different fuels til the engine goes bang!! Some went quickly, others were ok for years. If you are ok with this approach, go for it!!!!