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Old 17 July 2013, 01:55   #11
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Originally Posted by Downhilldai View Post
My opti 150 uses around 60:1. Maybe I'm not caning it enough.
Not sure wether the extra 100hp makes a difference. Also I think the 150 is 2.5 litre block and the 175-250 uses the 3 litre lump not sure though.
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Old 17 July 2013, 05:19   #12
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I was running a 250 opti last year and did 175 hours . I recon I was getting 1 litre of oil to 30-40 litres of petrol.best price I was getting on the oil was 8 a litre
That sounds a bit rich
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Old 17 July 2013, 08:44   #13
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Depends how you drive.

I've heard that every time you open the throttle it injects a little more on top of the steady state ammount.

So, if you work the throttle a lot you'll use a lot of oil.
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Old 17 July 2013, 09:11   #14
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Depends how you drive.

I've heard that every time you open the throttle it injects a little more on top of the steady state ammount.

So, if you work the throttle a lot you'll use a lot of oil.
50% of my running was trolling across the channel at 800 rpm for hours on end. Used 100 litres of oil during the 175 hours. That's why with those figures I now run the 150 merc four strokes. Miss the opti growl though
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Old 17 July 2013, 09:23   #15
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50% of my running was trolling across the channel at 800 rpm for hours on end. Used 100 litres of oil during the 175 hours.
How much?!!!

Where you pouring it overboard as chum?
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Old 17 July 2013, 09:36   #16
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50% of my running was trolling across the channel at 800 rpm for hours on end. Used 100 litres of oil during the 175 hours. That's why with those figures I now run the 150 merc four strokes. Miss the opti growl though
Summat not right there. Don't know about Optis, but Etecs use next to buggerall when trolling, as Searider says, the faster & harder you drive 'em the more oil they use.
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Old 17 July 2013, 10:48   #17
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Summat not right there. Don't know about Optis, but Etecs use next to buggerall when trolling, as Searider says, the faster & harder you drive 'em the more oil they use.
Had an opti have an Etec. The opti burnt a touch more, but nothing to fret about.
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Old 17 July 2013, 14:34   #18
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My optis run on about 35:1 fuel/oil when cruising around 4000/4500 rpm.

I had a breakdown last year, did the 25nm trip home on one motor, that motor consumed about the same amount of oil as the 2 motors would do normally
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Old 17 July 2013, 14:48   #19
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I had a breakdown last year,
You must be heading for another this year.
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