Hello

It's an old theme
Now there is the Quicksilver 25w50, is this a good choice for the 500 EFI?

thanks in advance for your suggestions

Sure.
So is Mobil 15w-50
So is Valvoline VR 20w-50 conventional or synthetic
So is plenty of other oils. But above , including the Mercruiser oil, are the top 3 fav’s.

Hello

I just had 11 hours on my Mercury 500 EFI engine after complete rebuild.

The oil change ?

Quicksilver 25w40 synthetic blend or the last Quiksilver 25w50 synthetic blend ?

The best choice ???

thanks

most people on the boards are using Mobil 1 15-50, or something similar

This. Wally world has good price.

Hello

But in Europe,

not Mobil 15w50, not Valvoline .....

then run what ever you like, personally I dont like synthetics in a marine application

Great post, some great info!

Found this link, never seen this one before, shows all the Mobil one oils, and how they are actually different.

The 15W-50 is 1300 PPM of Zinc

https://www.mobil.com/lubricants/-/m...pecs-guide.pdf


What's interesting as well, they make a V-Twin oil 20W-50 which is 1750 PPM Zinc.

Oil debates are endless. Everyone uses different oils and 99% have no issues so they think their oil is "the" magic oil. The truth is nearly any oil will work in nearly any engine. Even the super duper engines..... 99 cent wal mart oil will work as well at $12 VTwin in 99% of marine motors. You will never know the difference after years of use.

that^^^^^^ well maybe not the 0W20 lol