Thread: Fuels

what happens when you crack over about say 15-17000 psi (which is less than the nominal injection pressure of a td5 is that the bio can no longer "skin" so you get metal to metal contact.

think along the lines of putting a 0-5wt engine oil in a diff its better than nothing but as it cant resist the pressure of the face contact on the teeth.

THEN

add in that as you heat the bio up in the injectors from the pressure and nozzle exposure to the combustion chamber how it sort of caramlises and causes other problems.

I sort of summated it as Ive done it many times before.

heres the kicker....

properly made 100% bio has less problems than any of the blends, its the impurities in the blends and in a less than perfect batch of bio that cause most of the problems.

if/when the come up with bio thats stable at the injection pressures the td5 deals with I'll be on it like a shot and when it eats a part away (like a fuel line) I'll then find a suitable replacement for it.

All the Caltex diesel up this way has the "up to 2% bio-diesel" label on the pump and it's never been an issue with any of our diesels the few times we've used it, nor any trucks I know of.
Mum's old TD5 Defender had the best fuel economy they've ever had running the Caltex diesel in Northern NSW.

Here we run mainly BP or Shell, but it all comes from Newcastle out of the same depot, I believe.