indysupra

iTrader: (3)

Brad penn 20-50 for me.

the deep

iTrader: (8)

This......http://www.amsoil.com/shop/by-produc...50-racing-oil/

ThisIsLivin

+2

35fountain

I was wondering why you choose to us the Dominator oil. I use the z rod oil 20-50. I wrote to Amsoil and told them my type of engines and the rpm i run all day. They responded and told me to stay with the z-rod oil. Just wondering.

the deep

iTrader: (8)

This is just one of the reasons , read the last paragraph in these two articles . http://amsoilracing.com/index/News/2...om-marine-gn77 http://www.offshoreonly.com/forums/g...int-clair.html I'm sure the Z-Rod 20w50 is also fine to use .
This is what sold me !!!!! http://www.trustedoil.com/Mercury_52...e_Teardown.htm

35fountain

Interesting information. Here is the question I wrote amsoil about my engines and the response I got. I can't figure it out...................

Amsoil. I have been running the 20-50 motor oil and also the z-rod 20-50 motor oil. I have a high performance boat with twin 509-500 hp each. I run all day at 3500 rpms and up to 5200 rpms. Would the dominator 15-50 oil be better for my application that the regular 20-50 oil Thanks.

Amsoil's response. Jay;

I would stay with the 20W50, either ARO or ZRF, over the Dominator Oil in this situation.

Byron Selbrede

Technical Services

AMSOIL INC.

ADDRESS: 1 AMSOIL Center, Superior, WI 54880

E-MAIL: [email protected]

PHONE: 715-392-7101

FAX: 715-392-3097

troper

iTrader: (2)

Everything you would ever want to know about oil in this thread.......

http://www.offshoreonly.com/forums/g...brication.html

JRider

iTrader: (1)

In a performance or pleasure boat there really is not a big need for multiviscosity oil. These engines are starting at temps >70* not at 10*. Also thinner oil frees up HP...a lot of people overlook this in the quest for HP.