lwinders Posted March 7, 2013 Share #1 Posted March 7, 2013 Can someone tell me how much oil is required in each fork on my '83? And what kind of oil do you recomend? I found a thread about forks with progressive springs, but mine has the stock springs. Link to comment Share on other sites More sharing options...
KIC Posted March 7, 2013 Share #2 Posted March 7, 2013 Should be 10 wt or 15wt if you want it a little stiffer. Put the progressives in and you will love them. Link to comment Share on other sites More sharing options...
lwinders Posted March 7, 2013 Author Share #3 Posted March 7, 2013 Thank you KIC. Do you know how much to put in each tube? Link to comment Share on other sites More sharing options...
utadventure Posted March 7, 2013 Share #4 Posted March 7, 2013 I put in Progressives. I agree, you'll love them! I found the 10wt. a little soft but didn't want to go all the way to 15wt. so, I put 7 oz of 15wt. and 6.5 oz of 10wt. and enjoy the ride very much (total 13.5 oz). Big key is to put equal amounts in each. Dave Link to comment Share on other sites More sharing options...
bongobobny Posted March 7, 2013 Share #5 Posted March 7, 2013 400cc per tube per the Yamaha service manual. Several years ago a fellow from Toronto experimented by starting out with 380cc and kept adding 5cc and reported that there was a somewhat noticeable difference. Less oil, spongy ride. More oil, stiffer ride. Anyway, the book calls out 400cc or 14.1 Imperial ounces, or13.5 US ounces 10W... Link to comment Share on other sites More sharing options...
Squidley Posted March 8, 2013 Share #6 Posted March 8, 2013 Anyway, the book calls out 400cc or 14.1 Imperial ounces, or 13.5 US ounces 10W... We have a winner!! here's your kewpie doll Link to comment Share on other sites More sharing options...
lwinders Posted March 8, 2013 Author Share #7 Posted March 8, 2013 Thank you everyone that responded. Link to comment Share on other sites More sharing options...
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