Re: Oil

Posted by LukeM on Feb 13, 2013; 2:15pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Oil-tp4036563p4036564.html

Welcome to the forum!

Honda will tell you to use their 10W40 motorcycle oil.  You cannot go wrong with that.  You may pay a bit more for it, but it should work well.
Since the transmission/clutch and engine use the same oil, you would do well to avoid oils with Energy Saving properties.  These incorporate additives to help car engines reduce friction.  Those additives can cause problems for clutch disks, causing them to slip prematurely.
Conventional or synthetic oils will both work well.  Some prefer the Shell Rotella T 5W40 oil, others have their own preference.  If you change from conventional to full synthetic, there's a chance you might get a few leaks and drips of oil onto the pavement.  The thinner synthetic oil will remove "dirt seals" that build up in your engine.  To prevent that, you might want to run some Sea-Foam in the crankcase for a few minutes before changing your oil.  Sea-Foam is a very light oil/solvent that helps clean internal parts, such as crankcases, oil passages, and carbs (yes, carbs:  run one ounce per gallon in your tank to dissolve crud and buildup).

I hope this helps.  Type OIL in the search window on the forum's front page, and I'm sure you'll find LOTS of comments.

Luke M