5/9/07 -- Updated to highlight certain key bullets in red.
Offered just FYI ... no advocacy ... just FYI.
Over on the GL1800Riders board there was a post about Honda announcing a new full-synthetic oil. The thread over there is:
Pro Honda HP4S Fact Sheet
∑ HP4S is American Hondaís first fully synthetic 4-stroke oil
∑ HP4S is available in 10w30 viscosity only
∑ HP4S is compatible with synthetic blends such as HP4, as well as regular petroleum products like GN4. In other words, customers can switch to (and from) HP4S without any special crankcase flushing, etc.
∑ HP4S can be used in all 2006 or newer Honda Motorcycles, ATVís, Scooters, or PWC.
∑ HP4S will NOT be recommended for use in earlier models as it would conflict with the 10w40 viscosity suggested in the owners manuals.
∑ HP4S retains the same recommended service (oil change) intervals as called for in the owners manuals.
∑ HP4S does NOT contain any MOLY.
∑ HP4S part number is 08C35-SYN-1030M, Honda Code is 8589731.
. HP4S is sold in cases of 12 quarts per case
∑ HP4S is packaged in a red bottle with a silver label and cap.
∑ Once our initial launch is completed on 6/1/06, dealers will order the new HP4S through their assigned ExxonMobil Distributor
HP4S offers the following performance benefits:
∑ Lower fluid friction than conventional oils
∑ Better oxidation resistance for better high heat performance
∑ Higher film strength under heat and load than conventional oils
∑ Quicker flow to vital engine parts at low temperature, especially during start up
∑ Maximum power due to less frictional drag from the oil