That should be fine then, I've used the Mobile1 Motorcycle oil in bikes before. It's safe for clutches but switching an older motor, motorcycle or car, to synthetic late in life can lead to slow, weeping leaks around the gaskets. The other thing is you mention the PO changed all fluids. Does this mean he flushed and replaced the Dot3 fluid in the front brakes and clutch? If so, you may have air bubbles in the clutch line. I would assume he did, and try bleeding it again. It's a real PiTA to get all the air out of that line, just because fluid is coming out the other end doesn't mean all the air is out. You're looking for a tool called a MityVac to help you bleed it.
-Kyle On Mon, Apr 2, 2012 at 11:13 AM, Bryan Gibson <[email protected]> wrote: > It was Mobil 1 motorcycle oil...maybe 10W40 something like that. > > > On Monday, April 2, 2012 8:26:50 AM UTC-5, Kyle Munz wrote: >> >> Which oil did you use? If the clutch were slipping due to standard car >> oil being used that would make shifting difficult. >> >> -Kyle >> >> >> On Mon, Apr 2, 2012 at 8:07 AM, Bryan Gibson <[email protected]> wrote: >> >>> New rider with an '85 Nighthawk CB650SC. I bought the bike in February >>> from a guy that claims to have taken the bike out West just before he >>> decided to sell it and after getting to take it out 3 times, the >>> transmission seems to be shot. He claimed to have done routine maintenance >>> and was nice enough to change fluids except for oil. So I went ahead and >>> did so using recommended oil/filter. The last day I rode it, I noticed >>> that the bike started having trouble downshifting lower than 3rd and when I >>> was lucky enough to get back down to 1st at a stop, I couldn't upshift past >>> 3rd. The clutch seemed loose, too. I checked the brake fluid level and >>> noticed on the clutch side that it was low and full of sediment. I went >>> ahead and changed the brake fluid (using recommended fluid) and the clutch >>> was back to normal but I was unable to get any gears past 2nd (on center >>> stand with the engine off). After another 10-15 min of sitting, I now only >>> have first and neutral. I guess my first question (being a noob) should >>> be, is it bad to shift gears without the engine running? When I shift >>> gears, the "good" gears click in, but once I try to go higher, it just >>> makes a solid "clunk" like it does if you were to try to upshift past OD. >>> Does this sound like a shift fork, bad gear or does the entire tranny need >>> replaced??? I'd appreciate any help as I'm itching to get back to riding. >>> (I ordered an OEM manual that isn't here yet and can work on simple things >>> but I'm afraid rebuilding anything is above my pay grade.) >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To view this discussion on the web visit https://groups.google.com/d/** >>> msg/nighthawk_lovers/-/**mPnaTHLo4ksJ<https://groups.google.com/d/msg/nighthawk_lovers/-/mPnaTHLo4ksJ> >>> . >>> To post to this group, send email to >>> nighthawk_lovers@googlegroups.**com<[email protected]> >>> . >>> To unsubscribe from this group, send email to >>> nighthawk_lovers+unsubscribe@**googlegroups.com<nighthawk_lovers%[email protected]> >>> . >>> For more options, visit this group at http://groups.google.com/** >>> group/nighthawk_lovers?hl=en<http://groups.google.com/group/nighthawk_lovers?hl=en> >>> . >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/nighthawk_lovers/-/1EDTrt7RjpcJ. > > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
