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View Full Version : HP4S vs. HP4M


07black400ex
10-19-2009, 09:38 PM
I just sold my 400ex and bought a 450er. I'm trying to decide what oil to use. What are the advantages and disadvantages of each and what do you guys run?
wckedclownz69
10-19-2009, 09:46 PM
i just run hp4 on both sides....
atv fan 28
10-19-2009, 09:46 PM
here is an old link. hope it helps. http://www.exriders.com/vbb/showthread.php?s=&threadid=392806&highlight=450r+oils
chad502ex
10-20-2009, 06:27 AM
HP4Moly 20W50 on engine- love it!
Ruf Racing
10-20-2009, 07:40 AM
Engine side.

http://i532.photobucket.com/albums/ee328/RideRed187/ATV%20Parts/HondaOilWithMoly.jpg

Tranny side.

http://i532.photobucket.com/albums/ee328/RideRed187/ATV%20Parts/RedBottle.jpg
troybilt
10-20-2009, 09:39 AM
X2 ^^^
wykyd450R
10-20-2009, 01:54 PM
Me too!! :D
07black400ex
10-20-2009, 02:36 PM
What advantage is there to the one with moly and the one without? I've been told and maybe read somewhere that oils with friction modifiers tend to cause an engine to burn more oil than those without. Is this correct or have any of you guys heard this before? Not worried about the tranny side, I'm gonna run the HP Transmission oil. I'm just concerned with the engine side. What about the 10-4- vs. 10-50 as well?