Re: Marine Lubrication
 

Mobil-1 EP 10W-30

Amsoil Series 2000 0W-30

Royal Purple 10W-30

Redline 10W-30


The best of the best...note Amsoil replaced the Series 2000 10W-30 with 0W-30...about the same performance.

Re: Marine Lubrication
 

As a rule of thumb most of the time a motorcycle specfic product will have a higher additive package than a conventional automotive product. As I have stated on past posts I have been a fan of Spectro products for 20+ years. Spectro has been blending motorcycle spefic oils for 40+ years, long before any of the OEM's or any of the major oil companies. You can't go wrong with a Spectro product.
As far as the lack of color, it could be from the basestock or the additive pack. Don't pick an oil based on color, they can add any color they want when they blend. The only time you should be concerned with color is when you drain the oil. It should come out black. If is not black, the additives are not doing their job,ie,holding the contaminates in suspension so they will drain out with the oil.
A quick check on the color of oil............stick your finger in the waste oil, if after a second you can "see through" the oil, it's not dirty it has a lot more life in it. You changed too soon.
Diesel oil is another issue as far as color. I gets real black in short order. Soot form combustion in suspension.
Ken

Re: Marine Lubrication
 

75W-90 flows better and would be my personal choice.

I saw a few drives that were raced using 75W-90 Royal Purple...they looked outstanding..so I am leaning towards RP for drives.

Re: Marine Lubrication
 

Shockproof Heavy has a foaming tendency but many like it and use it anyways..fyi

Re: Marine Lubrication
 

10W-30 Mobil-1 EP

or

Amsoil
SAE 10W-30 Formula 4-Stroke®
Marine Synthetic Motor Oil (WCT)


http://www.amsoil.com/StoreFront/wct.aspx


I would mosty likely lean towards the Amsoil product as it is made specifically for your application as is shown to outperform Yamahalube.

Re: Marine Lubrication
 

What year Wave Runner? My 2003 FX-140 called for 10W30 only (I ran Mobil 1 with great results) but the newer ones list a range of viscosities depending on operating environment temperatures. We are running Mobil 1 15W50 in a friend's newer Wave Runner.

Re: Marine Lubrication
 

Yamaha said that either 10W-30 or 10W-40 synthetic oil is recommended.

In finding this to be the case I would use the 10W-40 Amsoil Marine 4 stroke product or 15W-50 M-1 unless the water temps are below 50*F.

http://www.amsoil.com/StoreFront/wcf.aspx

Re: Marine Lubrication
 

Happy Holidays from the self appointed guru of oil. :D

Peace, love and prosperity to all. I am off to visit relatives..... see ya in 2007.

Re: Marine Lubrication
 

I don't beleive that Yamaha makes a synthetic 10w30 product. Ken

Re: Marine Lubrication
 

I think you are right.

Honda has a really good 10W-40 synthetic 4-cycle oil...I like it a lot!!

http://www.parkeryamaha.com/index.as...D&ProdID=27047