1999 Merc 200 EFI...OIL

[97champion]

I have been using the Merc Prem Plus in my 1999 Merc 200 EFI since I've owned the boat...it is out of warranty.
I need some oil and all of the retailers in my area don't carry EFI oil any more..they look at me like the motor is a antique.
They assume everyone has a DFI or a 4 stroke.
Only one retailer has Merc Prem Plus @ 40.00 + tax a gallon add that to our gas prices $4.00 a gallon..
Academy won't ship to California. Bass Pro/Cabelas 150 miles away.
I have read as many posts on oil as I could find here on BBC...however I must ask the question again for myself.
Walmart has Penzoil Prem Plus Syn Blend at 17.00+tax...previous post indicate Penzoil Prem Plus Syn Blend is a good replacement oil.
Are there any changes in this oil? Is it OK to run in my 200 EFI ?
I usually cruse @ 3500-4000 rpm...and run her out during return to weigh in..
Does anyone run the Penzoil Prem Plus Syn Blend in their EFI motor?
Mechanics opinions?

[flashnyellow]

Many Walmarts in Louisiana carry Quicksilver Premium Plus in the stores. With the Walmart app you can order and pick up at the store.

I get my Merc Premium Plus from a local boat dealer.

[leonreno]

As Stated above Quicksilver Premium Plus is the same oil as Mercury Premium Plus and is a available through Walmart. But the Pennzoil oil would be a good oil too.