Motor Oil

[NYMINUTE]

My Mercruiser 5.0 just came out of warantee. I have used Mercruiser Oil per manufactures specs. What are the consequences of going to a Quaker State or Pennzoil motor oil. Marine or Automotive? Is there a significant difference?

 

[garycinn]

Re: Motor Oil

If you want to use Dino, use a straight weight 40, or any of the HDEO oils in a 15W40. Don't use a passenger car multiweight.<br /><br />If you want to use synthetic, you can go with several.<br /><br />Here are some ideas:<br /><br /> http://home.earthlink.net/~memphis3/boatoilsweb.htm

 

[Wart T]

Re: Motor Oil

Use good quality oil, multi weight is fine. Use the weights recommended by the factory. Stop worrying and go enjoy your boat.

 

[crazy charlie]

Re: Motor Oil

Mercruiser recommends to use straight sae 30 oil.For warmer climates straight weight sae 40.Multigrades are clearly not recommended because a marine engine runs costantly at higher rpm than a car so the demands of the oil protection are greater.Some here use synthetics and are very happy.Charlie