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Old 28 October 2003, 13:59   #41
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Originally posted by Richard B
I should think not... I'll get my snipers out to shoot at any Welsh Scorpion pilots seen smiling.

Your maths looks good to me - I was a bit upset when I realised it was burning 30:1 Never mind, I know where a Southampton guy keeps a big barrel of oil. That should do the trick. Just a thought - as you use Optimax oil, do you use Optimax petrol as well?
I have though about using Opti petrol, but I don't know if it's good or bad for the engine or just a marketing scam. Hello mr Esso Lawyer. That could be a new thread
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Old 28 October 2003, 14:51   #42
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Originally posted by thewavehumper
I have though about using Opti petrol, but I don't know if it's good or bad for the engine or just a marketing scam. Hello mr Esso Lawyer.
I use it in my car all the time - great stuff, works out about 1p cheaper per litre than the normal stuff. Mind you, economy wise you won't notice any differnce unless the engine has exhaust gas sensors etc so that the ECU can adjust timing/amount of fuel injected.

Outboards may not be smart enough? don't know anything about optimax's

Daniel
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Old 28 October 2003, 17:45   #43
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4 stroke maintaince

To be fair to this argument surley as 2 strokes use oil in the cylinders, and are relatively simple and easy to service, now I am not talking about anything more than routine service or routine maintaince, part of any 4 stroke service besides oil, and filters, and gear oil , nobody has mentioned that 4 strokes apart from needing sump oil and a few litres at that ,and an extra filter to change each service (oil) also require routine inspection as part of services, of timing gear.This would include valve clearance intervals, timing chain/belt renewal, shim or tappet work, or at least inspection of such.The intervals may be big but they exist nonethless , this has to add a cost per mile factor to the routine running of a four stroke motor.What if your camchain comes to the end of its life and needs replacing, and its in the middle of the block, they dont reccomend splitting chains so the cost of taking the crank out to fit the new chain would be huge.Timing therefore in a fourstroke is part of its running maintaince and needs to be included in the cost of servicing of the motor.I dont think you will beat DFI technology we run 2x75 hp Fichts at 34 kts we can get a fuel economy of 1.2 ltrs per Nm in total, with 2 motors and an oil/ fuel ratio of 70/1 and no cam chain, no mechanical valves no cam shafts, no cam lobes, no cam adjuster no sump oil, no sump oil filter, no shims tappets etc etc, still a complex motor but less moving parts, remember the discarded sump oil from each four stroke service would buy a few litres of two stroke oil for the same peroid, and the cost of a new sump oil filter each service, would buy another litre of two stroke oil for you to burn.So are fourstrokes all that cheap to run compared to DFI and Optis I dont believe so.
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Old 07 November 2003, 04:54   #44
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Last week Mariner held their dealer conference and presented a slide pack comparing the Otimax with other engines..............makes interesting reading........... this should stir up the debate.
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Old 07 November 2003, 05:00   #45
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Interesting...

I wonder if it would read the same if it were published by Suzuki at their dealer conference?

Were there any other comparisons, or was Suzuki the focus of their defense?
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Old 07 November 2003, 05:13   #46
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here are the others, was trying to improve the image quality
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Old 07 November 2003, 05:15   #47
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Next
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Old 07 November 2003, 05:18   #48
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yamaha
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Old 07 November 2003, 05:23   #49
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Old 07 November 2003, 05:24   #50
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