Mobil 1 4T 10w-40 or Royal Purple MaxCycle 10w-40. My region is of temps in the 70's~100's *F in the summer and 10~50 *F in the winter.

 

That is true but today's engines are asking more from an oil. I agree that THE most important thing to do is CHANGE the oil but these days it would be silly to ignore the available synthetics for use in today's lighter, higher rev'ving coated piston world. I have used the standard oils in my old Honda CB360t's partly for the reason you stated above. They do just fine on it.

 

I use Shell SX4.
No problems to date.
Bearing in mind that the engine in KLX is, by modern standards, is not particularly high tech.

Changed regularly, I doubt it matters much one way or the other.

 

Weerrrd

I use the valvoline too. Mainly because it's $3.50 a qt I tried using the $9.99/qt Mobil1 4T, and I've used other synths - I just don't see a difference that justifies the extra $$ each time.

Even when I pulled my head/cylinder out of the 250 - I used the valvoline for it's whole life and the cylinder/walls/everything looked like it just rolled out of the factory floor.

I dunno.

 

Wow....thanks for the info neighbor, definitely let me know if you do!

What part of Burque do you live in? I live in RR

 

Didn't go looking for Amzoil yesterday, it was too hot, I was too lazy.

I live close to you. I'm just over the county line at Golf Course and Ellison.

 

I've standardized on Rotella 15-40 for all of my bikes. I keep an eye out for sales and keep a stock in the garage.

The big thing is to avoid any oils that have friction modifiers, they don't work so well for motorcycles.

 

No problem, do you happen to know what the store name is?

Funny I use to live in Paradise Hills not too far from there. Its amazing back in the 90's u could just turn off most roads and start riding in the dirt, now they have most areas fenced off for development

 

I use Royal purple all the way,it's in may car, truck, 2 atv's and in the my 09 klx250.
The bike uses Max-Cycle 10w-40.