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Old 13 June 2007, 18:44   #41
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Seems mad - the instruction manual tells you to use DFi oil, but they test run it on a presumably inferior product in the factory and leave it in there afterwards............
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Old 13 June 2007, 19:19   #42
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Looks Like I am wrong

I have just spoken to my Mercury Mechanic who went into a very detailed explaination. Summary: the oil on a DFI engine is injected directly and atomized.and NOT mixted with the fuel. The oil on an EFI is mixed with the fuel and then the mixture is atomized. DFI oil has a greater ability to atomize by itself than EFI oil. Several years ago Mercury sent out a notice to this effect.
So use DFI oil on DFI engines.
Tony
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Old 13 June 2007, 20:19   #43
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Just found this oil which says it IS compatible with all DFI engines.

http://www.amsoil.com/storefront/hpi.aspx

It gives the viscosity - not very different to the bog standard TCW3 spec!!!

In fact the CASTROL MULTI-MIX 3 is even better and yet it is sold as just a normal TCW3 oil.....

In other words it all a load of ...........................
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Old 14 June 2007, 04:40   #44
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OK I am stupid. I am in the market for a box or two of six of the grey plastic cans of this stuff. Explain to me my safest cost effective solution without damaging engine or warranty, someone. Opti 150.

What is its shelf life incidentally?
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Old 14 June 2007, 10:09   #45
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interesting for the opti fans attached.

note that it says TC-W3 premium plus oil, apparently according to barrus this is a higher grade than regular TC-W3 oil as using regular oil would invalidate your warranty.

I have been in touch with the service mgr at ep barrus.

what do people think?

my view is i will continue to use Optimax/DFI oil in mine.
ok guys, i have the latest info for you

if you find blue green oil in your tank after a service or from new then this is quicksilver premium plus oil which is recommended by barrus/mercury as being suitable for the optis, the difference between this oil and dfi oil is apparently the dfi oil has a higher synthetic content and is slightly more expensive but both are fine to use in an opti as per the manual extract i posted below. I am getting ready to order up many many cases of dfi quicksilver oil so if you want me to share details of where you can order it up etc then pop me a pm, i have a consortium of 4 of us getting 2 cases each it seems there are 3x4litre bottles in a case and i am looking to pay approx 22.50 per 4l container.
the price is set to go up in august/sept i am told.

if you want an attractive price then you will need to order up in bulk as well.
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Old 14 June 2007, 12:59   #46
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May be of interest

The following may be of interst to both Uk and US members:
http://ecatalog.westmarine.com/full.asp?page=0592
It gives a comparason of cost of W. Marine's own brand and mercury's.
Regards, T.
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Old 14 June 2007, 13:04   #47
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The following may be of interst to both Uk and US members:
http://ecatalog.westmarine.com/full.asp?page=0592
It gives a comparason of cost of W. Marine's own brand and mercury's.
Regards, T.
i pay 7 quid more than you for a 4l bottle of quicksilver dfi

does not seem so bad now!
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Old 22 June 2007, 04:53   #48
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well the good news is that my 33 gals of opti oil is ready for collection

the bad news is

it seems i have cleaned out barrus and they have no more opti oil until sometime in august ish

so a note to opti owners...

make sure you have enough oil to last you until late august
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