oil for running in

Razar · Posted: April 13, 2009, 1:07 am Post subject: oil for running in

Hi. I've finally got the engine oil tight so I guess it's time to fill it up. I was wondering what you guys advise for running it in. It's only had a rebore and new pistons and cam chain, the rest is as found.

xsjohn · Posted: April 13, 2009, 9:25 am Post subject: Re: oil for running in

No one asnwered this post so..........50-100 miles is where most if not all the metal for break in would be shed.......easy running with 10-40 or 15-40 should be fine....then change at 100 miles.........

And one really should scrub a new bore with soap and water good to remove any possible stone left in the hone grooves..........

xsjohn

Razar · Posted: April 13, 2009, 9:28 pm Post subject: Re: oil for running in

Thanks for that xsjohn. Hey I did what you suggest with the cleaning too, though i did it to clean the barrels for painting. Laughing

yamaman · Posted: April 13, 2009, 9:35 pm Post subject: Re: oil for running in

I'm sure you know this already Razer, but synthetic oils shouldn't be used for running in, they can prevent proper bedding in of rings.
I used the same oil that I usualy use, Penrite 20w 50. Apparantly their car oil HPR gas 20w 60 is good oil for these bikes, i've never tried it though.

Jake68 · 650Rider Supporter Joined: Mar 23, 2007 Posts: 841

Thats right. Basic "dino" or mineral oil should be used for no more than 100 miles, best for 50. With no additives.

I like to use simple cheap 20/50 for about a thousand miles before I switch to a more expensive formulation that is suitable for engine longevity.

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