Hello everyone new to this. I own 03 P360 4x which I purchased in May 04 and a 04 KFX 700 which I purchase Aug 04. I use stock oil filters but use Castrol 10-40. I live in Lemoore approx. 30 miles south of Fresno. Is it O'K to use this oil or should I change. Also should I purchase the extended warranty; 2-yrs $495.00, 3 yrs $550.00, 4 yrs & $605.00. What do you guys think. I only ride them about 20 hrs. a month between the two if I am lucky. Also if you guys know anyone that lives this way please drop me a line. Thank you. By the way I paid $4500 OTH for the 360 and $6400 OTD for the 700. Do you guys think this was a good price? I live in California.

 

See my reply to your post in synthetic oil thread.