Looking for a synthetic to replace Merc's 25-40. I have currently narrowed down my list to these oils:
-Mobil Delvac 15-40
-Mobil 1 15-50
-Mobil 1 0-40
-Amsoil 15-40 Marine/Diesel
-Shell Rotella T Synthetic 5-40
Anyone have a favorite for Mercruiser I/O application -- either V6 or V8? The M1 15-50 would certainly be the easiest to get.
I have a 2700 lb boat with a 220 HP Mercruiser 4.3L EFI V6 that works pretty hard. WOT gives 4800 rpm. I stay under 100 hours per season.
Gitw
-Mobil Delvac 15-40
-Mobil 1 15-50
-Mobil 1 0-40
-Amsoil 15-40 Marine/Diesel
-Shell Rotella T Synthetic 5-40
Anyone have a favorite for Mercruiser I/O application -- either V6 or V8? The M1 15-50 would certainly be the easiest to get.
I have a 2700 lb boat with a 220 HP Mercruiser 4.3L EFI V6 that works pretty hard. WOT gives 4800 rpm. I stay under 100 hours per season.
Gitw