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#6025955 - 04/03/11 03:40 PM Optimax pro xs oil
188vx Offline
Outdoorsman

Registered: 09/12/10
Posts: 75
Loc: East Texas
I've been using Quicksilver premium plus oil but heard now Mercury recommends Dfi in the pro xs engines. Is this correct and if so is it ok to mix the two? The Quicksilver DFI says on the bottle that it is not intended for use in outboards that require TC W3 oil which is what owners manual calls for.

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#6026105 - 04/03/11 04:27 PM Re: Optimax pro xs oil [Re: 188vx]
Fish Killer Offline
Big Sexy

Registered: 12/11/04
Posts: 24874
Loc: Weatherford
I would call your dealership if it's under warranty. That way you know
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#6027302 - 04/03/11 09:41 PM Re: Optimax pro xs oil [Re: Fish Killer]
RangerP Offline
Angler

Registered: 02/12/10
Posts: 387
Stay with the premium plus. My mercury man says that it is better. Also if you did change don't mix them the opti oil is a synthetic.

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#6059318 - 04/12/11 06:05 AM Re: Optimax pro xs oil [Re: 188vx]
onetbone Offline
Angler

Registered: 03/25/06
Posts: 320
Loc: Tioga
Premium Plus for ProXS, DFI for the Optimax. Not the same engines.

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#6059632 - 04/12/11 08:25 AM Re: Optimax pro xs oil [Re: 188vx]
Chuck H. Offline
Outdoorsman

Registered: 02/03/09
Posts: 97
Loc: Salem, VA
Don Weed, who is a Mercury Master Mechanic and moderator of the BBC Mercury forum, advises that Mercury now recommends Optimax/DFI oil for all ProXS models due to it having more additives to fight carbon build up than the Premium Plus. My dealer confirms this. It is also fine to mix the two while you're changing over. I have done the change over on my 250 ProXS.
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#6062940 - 04/12/11 10:37 PM Re: Optimax pro xs oil [Re: Chuck H.]
Stogie Offline
Pro Angler

Registered: 04/05/08
Posts: 810
Loc: San Antonio
Originally Posted By: Chuck H.
Don Weed, who is a Mercury Master Mechanic and moderator of the BBC Mercury forum, advises that Mercury now recommends Optimax/DFI oil for all ProXS models due to it having more additives to fight carbon build up than the Premium Plus. My dealer confirms this. It is also fine to mix the two while you're changing over. I have done the change over on my 250 ProXS.


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#6064037 - 04/13/11 09:25 AM Re: Optimax pro xs oil [Re: Chuck H.]
Monkeetx3912 Offline
Angler

Registered: 12/06/07
Posts: 318
Loc: Waco,Texas
Originally Posted By: Chuck H.
Don Weed, who is a Mercury Master Mechanic and moderator of the BBC Mercury forum, advises that Mercury now recommends Optimax/DFI oil for all ProXS models due to it having more additives to fight carbon build up than the Premium Plus. My dealer confirms this. It is also fine to mix the two while you're changing over. I have done the change over on my 250 ProXS.
AFTER you mix the two oils give your mechanic a call. the oils will gel in the tank if mixed together. It has caused 2 powerhead failures in my area already.

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#6071020 - 04/14/11 08:19 PM Re: Optimax pro xs oil [Re: Monkeetx3912]
Dan A Offline
Angler

Registered: 02/15/08
Posts: 385
Loc: Cincinnati, Oh
My mechanic says that if you idle a lot change over to the DFI oil, if not stay with Premium Plus... Dan

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#6074365 - 04/15/11 03:09 PM Re: Optimax pro xs oil [Re: Monkeetx3912]
falcooon
Unregistered



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#6075492 - 04/15/11 08:48 PM Re: Optimax pro xs oil [Re: ]
2Strokes Offline
Outdoorsman

Registered: 04/02/10
Posts: 190
Loc: Dallas Fort Worth
Premium plus has been used for years and Mercury has had the dfi oil on the market for a while. Mercury says the DFI is better, but all Pro XS and Opti's come from the factory with Premium Plus in the oil tank. As far as trolling, thats what trolling motors are for. If you troll alot with down riggers you should have a 4 stroke anyway.

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