Can't beat the price!

when you factor in the shipping (unless free) it's not that great a deal. I use locally available (autozone) Mobil One Synthtic V Twin oil @7.99$ a quart. All my bikes have used this for many years. Also, Mobil synthtic hypoid gear oil for the rear transaxle too...good stuff.

Have been buying this from the dealership. Not any more! Never seen 0W30, is that supposed to be 10W30? Will be ordering it here from now on.

This is the oil I'm going to stick with. It's a quality product that keeps my engine and transmission shifting very smoothly. Also considering 5,000 mile change intervals it's that good.

Shifting is much smoother with this over regular oil. Very satisfied with performance. I may go full synthetic next time to see if can get even better. Will definately stick with the Honda brand either way.

Great price from WingStuff compared to stealership .... don't know I see much difference from the GN4 with shifting as others have commented, but each wing is unique. I always change oil around 4-5K, so when draining the old, still looks new.
My local stealership mechanic actually tried to down-sell me (a new one for me) the last time I bought there, telling me that all of his mechanics, several with wings, just run regular oil, but still a hot topic of debate.... perhaps I buy too much into the synthetic or partially-synthetic claimed attributes, but hey, guess its up to your personal views.

Until this oil change, I always had the dealer do it for me. Who knows what kind of oil they were putting in my GW!! With this oil, the bike runs smoother, shifts smoother, and feels better going down the road. I highly recommend it!!

I'm a AMS synthetic guy from way back, They were first in synthetic tecnology, but tried this oil and it is just as good and same price, makes bike run so smooth..

I have changed the oil on my GL1800 twice and the Honda dealer has change it once so far. My engine runs very clean, makes lots of power and doesn't leak or burn any oil. I have changed the oil with this brand every 3,000 miles since I bought it used. I didn't know the history of the bike when I bought is so I have changed it more often. I'll probably to to 5,000 miles as time goes on instead of the recommended 8,000 in the owners manual. Better price than at the dealership also. My son uses Amsoil in his ZX14 drag bike but I'll have to see if it is OK for the wing. I use the oil filters listed on the GL1800 section of WingStuff also. Great write ups in the review section on those also.

Used this 10/40 oil and Honda filter. Seems to run smoother (might be my imagination) and shifts real nice. Oil and filter change needs 3.9 quarts.