Originally Posted by TennesseeSmith
I'm running Honda HP4 oil and I still see the 1N2 problem a few times per week...
Do you use the Gold bottle? That is a synthetic blend. I still am wondering if any amount of synthetic is bad for this transmission. Any synthetic is a bit more slippery than regular dino oil. Even Honda's own documentation on their oils states that their synthetic has "lower fluid friction" than dino oils.
The HP4S is full synthetic and is much slipperier than dino oils. Good for racing and high stress per Honda's own recommendation. Implied is not quite so good for street/touring.
HP4M is a synthetic blend and has Moly, a friction modifier that is bad for the clutch. DON'T USE THIS OIL IN THE CTX
. Only good use for this oil is in very high stress operation... lots of redline and lugging.
GN4 is full dino oil and may be the preferred choice for our CTX bikes if the vast majority of riding is commuting, street, low stress.
Was reading in this document from Honda
. I know it was written in 2009 but should not be much different than now.
I really wonder what oil the dealers use. I am betting they stick with ONE oil for all their oil changes in all the bikes they service. Probably the HP4 gold bottle. For sure which ever one costs them less.
I've used full synthetic in all my bikes in the last 15 years but from what I am reading here I think for this bike I'll stick to the Chevron Havoline High Mileage 10w-30 or 5w-30 (for winter time) in the red bottle as I showed above.
I've also had the 1-2 shift to N in all my bikes. But that has happened only once or twice a month of constant every day riding, same as with my CTX.
prior and current bikes:
1973 Harley Davidson 125 dual sport- sold
1997 Kawasaki Vulcan 750- sold
1990 Honda Gold Wing GL1500- sold
2005 Suzuki Burgman 650- traded
1998 Honda ST1100- sold
2014 Honda CTX1300A (U.S.A. Ion Blue Deluxe)-sn: 489- primary transportation
2003 Honda Metropolitan CHF503 (wife's ride)
flickr photos of CTX1300A
Yep, that lone state of Maine is where I owned my first mc.