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RUTHLESS
07-30-2004, 10:24 AM
IS ANYONE RUNNING FULL SYNTHETIC?
IF SO HOW LONG DID YOU BREAK IN YOUR MOTOR ON STANDARD OIL BEFORE CHANGING OVER TO SYNTHETIC?
THANKS
Crashmore 22
07-30-2004, 11:03 AM
Yeah i run hondas full synthetic. I just did the break in the way that Duncan Racing's 4-stroke break in sheet says and switched after the last ride cycle. Go to their web site and look under the instructions or faq link i can't remember which it is.
EvilJester400EX
07-30-2004, 12:43 PM
Originally posted by Crashmore 22
Yeah i run hondas full synthetic. I just did the break in the way that Duncan Racing's 4-stroke break in sheet says and switched after the last ride cycle. Go to their web site and look under the instructions or faq link i can't remember which it is.

Does your clutch slip at all since you're running synthetic? I heard somewhere that YFZ's like to start slipping clutches on synthetic oils.
cliq20
07-30-2004, 02:31 PM
only if they have friction reducers added. some are made for wet clutches and do not have them added. for example amsoil 0w40 4 stroke oil
RUTHLESS
07-30-2004, 03:48 PM
COOL
DOES ANYONE KNOW IF REDLINE HAS FRICTION REDUCERS ADDED?
5valves
07-30-2004, 05:33 PM
Mobile 1 Red cap from wallmart for 20-22 bucks for 5 quarts does not have the addatives.
Look on the back of the jug. there is a circle and you dont want the fuel conservative bs. I dont remember all the BS, but if you look at a few diffrent oils, you will see what I am talking about.
Dodge 1 Ton
08-03-2004, 11:36 PM
What weight oil do you guys run?
Quad18star
08-04-2004, 05:46 AM
I run Amsoil 10W40 4 stroke in my YFZ.
user101
08-04-2004, 10:36 AM
its not a yfz but it is a 4-stroke and i run mobil 1 15w-50 in the grey bottle w/ the red cap
Shocka400ex
08-10-2004, 02:30 PM
I would not run a full synthetic oil in your YFZ. I always ran it in my 400ex and never had problems but when My buddy put it in his YFZ he went through two clutches within 6 months. Ruby from DFR recomended not using sythentic anymore. Just an Idea
ranger400ex
08-10-2004, 04:30 PM
BS...I am calling it.

Run the red cap mobil 1 15w-50...and be done with it. 1/2 the race quads out their run it with zero issues, if you have a clutch problem...start looking at the rider!!!
electricstart
08-10-2004, 05:56 PM
amsoil motorcycle oil 10w40
Shocka400ex
08-11-2004, 07:49 AM
Ranger400ex,
I have to agree with you on that. I was curious to why know one else has burned up as many clutches as my buddy but he is a pro and does win races so he must be doing something right.