i was wondering if i could use fully synthetic oil in my 660 such as mobile 1

 

No it will make your clutches slip..I done it once about 3 years ago..It soaked into the clutch fibers and i have to change my clutch out..Im not saying it will happen to you..but thats what it did to mine...I dont run any synthetic in any of my quads..

 

Been running it for years. You won't have a problem. Some people will freak out like the above reply, but you will be fine.

All of my riding buddies run it too. Guess what? No problems.

My bike is a YFZ that gets raced in MX and XC all summer long. I change it between every race and every other practice. I've had this bike for three years and run it since day one. I've run it in every bike I've owned. Again, no problems.

There will be more psycho replies that tell you not to on this thread. This topic reminds me of the K&N vs Foam topic. There's always some closed minded people out there.

Buck

 

Freakin out..WTF..I was just telling him what happend to me...People like you that point finger and just trying to be a @ss is what starts ****...You run WTF ever you wanna run in your tonka toys...I know what best to run in my quads for the kinda riding i do...I was NOT Being jug mental...I was just letting him know a prob i had with it...Im not being CLOSED minded its a forum..It mite work fine in your quad what ever it is you have...But if your putting any kinda power to the ground i would not use it...But if your just putting up and down trail it mite work...

 

Basically synthetic is the best you can run. You just have to make sure it is the right one for your quad. If it has any of these 3 things written somewhere on the bottle then you can run it without any problems.
1. Contains no friction modifiers
2. No EC's or not energy conserving
3. Wet clutch compatable or wet clutch safe.

Heres what I reccomend. I run it in my bike motor/tranny and quad tranny (so do all my friends and family). Been doing it for years with 0 problems

https://www.amsoil.com/storefront/aff.aspx

As for buck, dont be an ahole doyle is far more welcome here than u.

Doyle, you should try out some amsoil. I garuntee you will like it if you just give it a shot. Try that stuff above in your tranny and tell me what u think. If you need something to mix it with give interceptor a shot, or dominator. Just read the articles on it and let me know what you think. Plus moblie 1 IS NOT wet clutch compatible.

 

I run synthetic in all 4 of my quads. I use Mobile 1 in 3 of them. Use Mobile 1 MX4T thats made for motorcycles and atv's. No friction modifiers and made for a wet clutch. I like it cause I can get it almost anywhere.

 

Synthetics are fine but they are not best for everyone such as for me. Synthetics have two main advantages. First the viscosity is usually lower so winter starting and warm up is quicker with less cold oil engine wear. Second the viscosity breakdown or falling out of viscosity grade is slower with synthetics. Viscosity breakdown means that a 10-40 grade will eventually become a straight 10 weight. So for those who operate machines in very cold weather and especially for those who extend oil change intervals beyond manufacturers recommendations synthetics can perform better. But synthetics are more expensive so for many riders synthetics offer no advantages. In my situation I never operate my motorcycles or quads in low temperatures. I also am very carefull about operating at very low load until full warmed up. I also change motor oil at about 1/2 the recommended change interval so I get no falling out of grade. My favorite motor oils are either Chevron Delo 15-40 or Shell Rotella T 15-40 or any other good diesel motor spec non synthetic motor oil. I would not hesitate to use Walmart diesel 15-40 in a pinch. I believe that if I lived in colder climes then I would run something like Shell Rotella T 5-40 full synthetic.

 

My understanding of ATV synthetic motor oil is that it will resist shearing of the polymers and just last longer. I believe that standard ATV motor oil will become excessively dirt long before it has degraded by shearing. I use Valvoline 10w-40 and change it every 1500 miles. The oil is then showing signs of dirt, but the viscosity doesnot appear to be diminished.

For your consideration: Standard fossil motor oil will provide the same overall lubricity as synthetics, because you change it when it gets dirty (at mfg recommended frequencies), which is long before the fossil motor oil has degraded.

Best regards[img]i/expressions/face-icon-small-smile.gif[/img]

 

Mile for mile synthetic oils are much cheaper because they dont have to be changed as often. You can easily go twice the mileage with the same protection with synthetic oils. Petrolium oils must be changed more frequently therefor are much more expensive. Im going to assume you get the best of each type of oil. Walmart oil isnt oil in my book. I dont think I would trust that in my weedwhacker.

Lets take a 3000 miles worth of oil for example
Syn:
3 quarts x $8 a quart = $24
Pet:
6 quarts x $6 a quart = $36


Bottom line is there is no disadvantage to running syn oil, in the long run it is the same price or cheaper than other oils. It offers:
Better protection
More HP
Easier cold starts
Cheaper Mile for Mile
Maintains viscosity much longer

 

damn u pay $6 a quart?? i only pay $5 =-o