Hello, I'm a new guy to this awesome site. Can you help? We have a 2004 Polaris ATP 330. They recommend their 0w-40 weight oil only. We will only be riding this in the summer months which have a temperature range of say, 45 to 100 degrees plus. I just did it's first oil change (15 hours) and used Redline 10w40. My reasoning is, I don't need protection to -40, so I feel this would be OK. Does this sit well with you guys or am I overlooking something? Also, I replaced the OEM Polaris filter with a WIX. The OEM has a thimble looking thingee down in the bottom of it and the WIX has the spring towards the top (open) end of it. Is this a problem, I'm kinda weird about this stuff. Always use the Fleetguard Statopore on my Cummins (perfect analysis at 294,000)with Delo 400 15-40. I want the best for the little beast also. Any thoughts will be appreciated, good or bad. I have never used synthetic motor oil before, only the gear stuff, which really impressed me. Thank you, Jim