When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So, the tranny fluid would not affect your primary fluid situation. What may occur is what is stated above.
What I would do is drain the primary (not just inspect it through the cover), then refill (not how much) and ride for the specified time or mileage (couple of hundred), and then drain and re-measure. This will definitely let you know if you have oil coming over from the engine.
On a 1988, your engine main seal probably needs to be changed, if you haven't do so. Good luck.
Thanks for the comments.
I appreciate your experience an insight.
My confusion results from the fact that as the Primary fluid volume increased, the engine oil and transmission fluid volumes remained constant.
Yes, i understand that the transmission fluid will not likely affect the Primary fluid volume and the increased Primary fluid volume is likely engine oil... but how can Primary fluid volume increase while the other volumes remains constant!!!???
If the crank seal is leaking, it will only pull fluid out of the primary into the engine. I'll spare y'all the long story as to how I know that, but will say - it's a long ride from Seattle to Charlotte using a turkey baster and 7/16" wrench at every fuel stop...
There's only 2 ways for that to happen. A missing "screw" from the rotor connector clamp (red circle) or most often, the bearing sleeve is loose in the engine case usually causing a crack that's sometimes near impossible to see. (yellow arrow). Again, and even if it's totally shot, the seal will NOT let enough engine oil into the primary that you could ever measure.
Verify you're actually "making" primary fluid is the first thing to do before you panic. And yes, you won't notice much, if any engine oil missing until the primary is way overfull, if it's the bike fault. Let's hope your overfull issue was just a fluke mistake from the last engine service.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
Primary fluid excess!?
