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#11071226 - 08/29/15 11:36 AM oil for merc
whybass Online   content
Outdoorsman

Registered: 06/20/12
Posts: 132
Loc: beaumont,Tx
I have a 99 Merc 225 and wanted to know the best oil to run in it. The reason is my boss has 50 gallons of Mobil oil that he said I could have and wanted to know if it was safe to use. Mobil says they make oil for Mercury and would like to know if anyone knows for sure.

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#11071376 - 08/29/15 01:23 PM Re: oil for merc [Re: whybass]
JimmyP Offline
Pro Angler

Registered: 11/26/12
Posts: 806
Loc: Waxahachie, Texas
Just because it is Mobil Oil doesn't mean it is 2 stroke oil. Use what your manufacturer says to use in your engine. If it was me I would run the Mercury Premium Plus in it, but others have had success running other GOOD oil in theirs. What kind of oil is the Mobil? What viscosity? You may be able to run it in your vehicles.

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#11071455 - 08/29/15 02:29 PM Re: oil for merc [Re: whybass]
Pat Goff Online   content
TFF Celebrity

Registered: 01/29/05
Posts: 5053
Loc: Marble Falls/Seadrift
TCW3 is the minimum. If it's a optimax it needs DFI oil. If it says anything else it's not right.
_________________________
Pat Goff
Marble Falls/Seadrift TX

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#11071468 - 08/29/15 02:41 PM Re: oil for merc [Re: whybass]
Csafisher Offline
Outdoorsman

Registered: 01/20/11
Posts: 157
Loc: Texas
^^^ Yes. Optimax needs DFI oil. If not then you can use any TCW3 oil.

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#11071798 - 08/29/15 05:47 PM Re: oil for merc [Re: whybass]
machinist Online   content
Extreme Angler

Registered: 08/22/06
Posts: 1715
Loc: Lake Graham, Lot 30
My 1999 225 Optimax owners manual says to use Mercury or Quicksilver Premium Plus.

Johnny
_________________________
I fish on the edge and stay out of the middle

99 BassCat Jag w/225 Merc Optimax

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#11072149 - 08/29/15 08:51 PM Re: oil for merc [Re: whybass]
Kev-o Offline
Outdoorsman

Registered: 05/02/13
Posts: 147
Loc: Beaumont, TX
I have a 95 Merc 200 XRI and I use the Quicksilver Premium Plus. You can buy it at Academy.

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#11072999 - 08/30/15 01:40 PM Re: oil for merc [Re: whybass]
whybass Online   content
Outdoorsman

Registered: 06/20/12
Posts: 132
Loc: beaumont,Tx
First it is 2 stroke oil. The problem is I'm not sure if it is a dfi or efi. The serial # OG947171 won't pull on marine engine or boat net.

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#11073050 - 08/30/15 02:12 PM Re: oil for merc [Re: whybass]
RangerBass21 Offline
Extreme Angler

Registered: 01/09/15
Posts: 2210
Loc: Plano
Should say on the motor if it's s efi or dfi ......
_________________________
bannana2

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#11073195 - 08/30/15 03:36 PM Re: oil for merc [Re: whybass]
whybass Online   content
Outdoorsman

Registered: 06/20/12
Posts: 132
Loc: beaumont,Tx
cowling has been updated and only has mercury on it

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#11073293 - 08/30/15 04:16 PM Re: oil for merc [Re: whybass]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10847
Loc: Littlefield Tx & Lake A. H. US...
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11073476 - 08/30/15 05:40 PM Re: oil for merc [Re: whybass]
whybass Online   content
Outdoorsman

Registered: 06/20/12
Posts: 132
Loc: beaumont,Tx
Thanks Gary. It is like the second one so it is an EFI. So what oil is best to use?

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#11073641 - 08/30/15 07:07 PM Re: oil for merc [Re: whybass]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10847
Loc: Littlefield Tx & Lake A. H. US...
You can use the Mobile as long as it shows a TCW3 rating.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11073648 - 08/30/15 07:11 PM Re: oil for merc [Re: whybass]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10847
Loc: Littlefield Tx & Lake A. H. US...
Reason your number doesn`t show is the way you entered the first symbol, it is number 0 not the letter O.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11073653 - 08/30/15 07:12 PM Re: oil for merc [Re: whybass]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10847
Loc: Littlefield Tx & Lake A. H. US...
You really need to find a manufacturing label or stamp.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11078312 - 09/02/15 09:13 AM Re: oil for merc [Re: whybass]
G Rod Offline
Angler

Registered: 10/18/10
Posts: 304
Loc: N. Richland Hills, TX
There is a good sticky pinned over at Bass boat Central in the Mercury forum that gives all the details for oil. It's under the FAQ.
_________________________
2016 Basscat Cougar FTD, 250 Mercury
www.bcfw.org Bass Club of Fort Worth

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