Oil

[Zinger11]

Oil

I'm installing a new 5.7 mercruriser in my boat and someone recommended I use Shell Rotella 15w40 I know its for diesel engines and was wondering if anyone else uses it Thanks

[Jerryriggin 2]

Rotella 30w

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[Albemarle16]

I ran Shell Rotella 15w-40 for 10 years in my other boat with a 5.7L mercruiser, no problems.

 

I like that oil, it's also rated for gasoline engines.

 

Did not see any difference vs the 25w-40 mercruiser brand oil.

 

 

 

[fisherdude]

shell rotella  15 w 40 diesel is good oil been using it for years now . you said that you are doing a new install of a motor . is it a crate motor new  from mercury? if so might need brake in oil / or mercury oil to keep from voiding warranty . 

[Zinger11]

shell rotella  15 w 40 diesel is good oil been using it for years now . you said that you are doing a new install of a motor . is it a crate motor new  from mercury? if so might need brake in oil / or mercury oil to keep from voiding warranty . 

Jasper crate motor

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[L&M]

Make sure to use what they recommend as well as any additive they supply & follow there break in procedure to not void any warranty with anything from Jasper or any other re-builder for that matter.