What Oil do you use for your Mercury?

I tried this in the right place and no answers.
What oil do you use for your Mercury? I use a blend from where I bought the motor but not sure what make it is? If I go to a Synthetic blend do I need to use up all the oil in the tank first (reservoir) or can I just add it to what is left in it?

What Mercury do you have?

Premium plus I'm my 250 ProXs

Quicksilver DFI made by Mercury

DFI, I was told to run my oil tank as low as I could then switch.

DFI by either Mercury or Quicksilver

+1

I was under the understanding that if you have a DFI PRoXS motor you could only run DFI oil. Am I wrong? that said, the only DFI oil I've ever seen sold is the Quicksilver.

DFI 200HP proxs

2012 Mercury 250 Pro XS

Premium Plus.

It's what the dealer I use recommends and I trust them 100%

115HP Opti new 2014 model

I run a 2012 ProXS and I was using Mercury DFI but all I use now is the Quicksilver Premium Plus

DFI is whats recommended by merc but premium plus is also ok. If you idle alot use dfi if your always moving use prem plus. Just my opinion

Only Quicksilver Premium Plus for my 250 Pro XS.

I have a 2005 115 and use Pennzoil Synthetic, used it in every boat I have had with no issues.

I also have a 250 Pro XS, and originally they recommended the Premium Plus for the XS motors, not the DFI. However about 2 years ago they changed and now recommend the DFI for the XS's. I just stuck with the Premium Plus (now says synthetic blend), because it has been working all along. Why change? The bigger issue is to be sure to use a fuel additive for today's junk gas.

There are great discussions on this at the Merc. 3.0 page at BBC. Over there they said the tw0 will mix OK, but like said above, run out as much as safely possible before changing.
Hope this helps,

Royal Purple, but I still premix

Quicksilver DFI

2009 150 EFI, using Mercury/Quicksilver Premium Plus.

250 Pro XS and I use the same.

Canola

03 225 Opti = Mercury/Quicksilver Premium Plus.

I've always ran Premium Plus. I have ran DFI and seen no difference in performance and the Pre+ is way less expensive. I look at it like this; GM recommends GM oil and Ford Recommends Ford Oil, etc... As long as the Oil you use, meets or exceeds manufacturers specifications it is acceptable and will not void a warranty.

Premium Plus

DFI

What's "idle"? Lol! I use premium plus in my proXS

The 250 ProXs comes with premium plus from the factory, so that's why I run the premium +

2012 115 XS - DFI

Just got my book out and it says "we recommend DFI but if not available we recommend TC-W3 Premium Plus 2-cycle oil". So, DFI or ??

Mercury DFI oil is all I use cost the same as Premium Plus were Im at so why not use it.

Premium plus will run in any 2 stroke engine