Just wondering what kind of oil you guys are running in your 4 strokes. I live in Wilmington North Carolina. Its semi humid here and 40 degree nights with 70-90 degree days. THanks for the help!

 

Forgot to say I am running a 2005 Wolverine 350. ThanKs!!!!

 

A 15/40 will work fine. A 15/40 is good for 105F heat and good for around 20F or so on the low side.

 

Is it OK to run castrol? Or should i go with a atv 4stroke only oil? Thanks.

 

Depends on the grade. My quad calls for an API SF or SG grade, API SH or SJ with JASO MA.
I personally run 15/40 Rotella in everything that takes oil. I use it in everything from a lawnmower to 600HP small block chevys to even diesels. It is rated for everything I own; if I remember right I think it is a SJ rated oil. It's an inexpensive oil and I don't have to have 5 different oils laying around. Never had an oil issue in any of my engines.

 

Not knowing how much riding you do, I would say use about a 20/40 SAE. If you stay above the 20 degrees, this oil should be fine with good protection for the occasional cold days.

I also use the yama-lube from the yamaha dealers. It may be $1 more then another type, but i haven't found another brand yet.

 

Smart man........... (i'm a diesel mechanic) I personally like Rotella and totally agree with your reasoning.

 

I'd go with a 10/40 oil, what ever brand you want, if you feel your gonna be riding in weather 100+ degrees go with the 15/50.

 

[quote]
Originally posted by: Budwiser
Not knowing how much riding you do, I would say use about a 20/40 SAE. If you stay above the 20 degrees, this oil should be fine with good protection for the occasional cold days.q]

20/40??? That doesn't sound right. At 20 degrees out that's pretty thick stuff to be pumping thru a cold bike. No manuals (or mechanics I know) recomend 20 weight below freezing...

 

10/30 castrol..no problems and i put it in every thing.