Opti DFI Oil usage

[David G]

Has anyone done any analysis of DFI usage against fuel.

What I mean is, does it average out at about 50:1, 100:1....a lot more/less?

Trying to work out a cost per litre of fuel for the stuff as the tank doesn't get refilled after every trip in our club.

I suspect it depends on the type of running but an average would be good to know....if it exists that is!

[Downhilldai]

Mine works out at around 75:1

[martini]

Mine use 35:1 at cruising speed (4000ish rpm) although when on the river up to Paris generally just under planing speed, this reduced dramatically.

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[PeterM]

Pretty sure mine came to about 80:1 with mixed use ( slow & fast - not much in bewteen) .

I recal being slightly surprised by Martinis use in the past

[martini]

Originally Posted by PeterM

Pretty sure mine came to about 80:1 with mixed use ( slow & fast - not much in bewteen) .

I recal being slightly surprised by Martinis use in the past

It's all about load I guess. At 2.5 tonnes dry weight, mine are working pretty hard

[Turbodiesel]

Originally Posted by martini

It's all about load I guess. At 2.5 tonnes dry weight, mine are working pretty hard

Sure is when you look at them running with the cds plugged in the load does make a difference to oil use.

[Jeff]

With the typical mix of med-heavily loaded rib with 4 fatboy divers on a 15-20 mile fast cruise, 90 min idle whilst trawling/diving and fast return I seem to average 50:1 over the year

Jeff

[martini]

Sounds like 50:1 is a good ballpark figure to work to then

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[David G]

Thanks All!