I use the Mobil 1 V-Twin in all three holes on both Harleys, in my KTM and in my XR -70. Whatever's left goes in the lawnmower. You'll be fine with that.

 

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Here's a good place to start for proper oils that are specifically formulated for the Harley's motor/trans/primary case.

Scott

Heres a couple links to buy spectro's motorcycle oil online & delivered to your door for a bit less or same price you'd pay locally for it depending on dealer.

http://performanceoilstore.com/products.asp?cat=65&pg=4

http://www.spectroshop.com/heavy-dut...60/prod_60.htm


Spectro Heavy Duty Primary Chaincase Oil 1-qt

Spectro Heavy Duty Primary Chaincase Oil 1-qt. This sheer stable petroleum is designed to withstand the punishment of high loads, and contains special polymers to provide exceptional clutch engagement and temperature stability. Meets full OEM requirements, and should be used according to manufacturers’ instructions. Formulated specifically for Harley® Sportster and Big Twin applications. Low drag, low friction loss SAE 85w viscosity helps eliminate clutch “drag” and slipping.
List Price: $12.04
Price: $7.95

Spectro Heavy Duty Platinum 6-speed Transmission Oil 1-qt
Spectro Heavy Duty Platinum 6-speed Transmission Oil 1-qt. Enter quantity of 12 for case discount. Designed by Spectro in response to complaints from Harley owners about the great but noisy new 6-speed transmission, this full synthetic provides ultimate lubrication protection. Formulated to significantly reduce gear noise and provide easier, smoother shifting, this SAE 75w140 formulation eases shifting even when cold. High loads and extreme heat do not affect the oil, so it performs well when pushed hard and long. A.P.I. GL-5 rated
List Price: $19.60
Price: $15.85


Spectro Heavy Duty Platinum Full Synthetic 20w50 1-qt.
Enter quantity of 12 for case discount. Engineered specifically for Harley Davidson® high-performance engines and other high-output V-Twin motors. Spectro Heavy Duty Platinum Full Synthetic provides smoother shifting, reduces friction, offers tremendous lubrication and provides superior protection in extreme heat conditions. A.P.I. SF/SG – CD/CG - 4.
List Price: $15.00
Price: $10.95

Spectro Heavy Duty Engine Oil 20w50 1-qt
Spectro Heavy Duty Engine Oil 20w50 1-qt. Enter quantity of 12 for case discount. A superior motor lubricant designed specifically for use in American-made Harley® V-Twin engines. Crafted from superior petroleum stocks combined with the most advanced anti-wear, anti-carbon additive systems available, Spectro Heavy Duty extends component life, reduces wear, eliminates valve sticking. Meets all known OEM warranty requirements. Exceeds A.P.I. SF/SG – CD/CG - 4.
List Price: $8.66
Price: $6.65

Heavy Duty 25W-60

Spectro Heavy Duty Engine Oil is a superior motor lubricant designed specifically for use in American-made Harley® V-Twin engines. Crafted from superior petroleum stocks combined with the most advanced anti-wear, anti-carbon additive systems available, Spectro Heavy Duty extends component life, reduces wear, eliminates valve sticking. Meets all known OEM warranty requirements. Exceeds A.P.I. SF/SG – CD/CG - 4.
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Price: $8.93

FEW MORE GOOD QUALITY SYN OILS FOR THE HD MOTOR ARE:

AVAIL AT AUTOZONE/ADVANCED AUTO/NAPA/WALMART/ETC.

MOBIL-1 20W-50 V-TWIN SYN

MOBIL-1 NASCAR ENDORSED 15W-50 SYN OIL

 

wscott, do you own stock in Spectro? I'm having deja vu from the "Who runs gear oil in their transmission?" thread.

 

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NO!/LOL!!!!!!!!!!!

Yes i did post same info in another thread trying to help someone out.

Scott

 

As a new HD owner can I ask an honest question? I'm really not trying to start anything , I just wanted some clarification.

Why is the first thing everyone states on these threads is to get a service manual?
I could understand needing one for extensive maintenance, but for fluids and basic stuff that is already covered in the Operating Manual that came with the bike, why is that the first response?

I've been on other forums for Hondas and Suzukis, and for basic maintenance there are usually simple guides other owners have put together ( some with or without pics). But my main point is that I usually don't see anyone there recommending the service manual unless its something not covered in the MOM (like setting valve clearance and such.)

Is there something different about HDs that require the manual?

 

For simple fluid changes, I only use the manual to reference torque values. Cam changes were done using instructions downloaded from S&S. While a manual is a good thing to have for those of us that avoid the dealer, I don't feel it's necessary just for oil changes. But, how many of us ONLY change the oil?

 

If you only want to change the substances in the three holes, you could probably get by with the owners manual, but the service intervals calls for many other things beyond that, which are not outlined in the owners manual. For those who want to do their own service, the service manual is a goldmine of information. That's why that statement is so frequent on threads that have service types of questions. The manual will more than offset its cost the first time you use it to perform work that you would have otherwise paid a mechanic to perform.

 

I'm my experience, all forums I've been a member of has the guys preaching to buy a service manual. I think for the most part, it is an inexpensive reference tool. It seems like a lot of guys that frequent the forums get tired of seeing people start threads asking the same questions repeatedly. Especially for the really basic questions i.e.: how much oil? drain plug location? torque spec on drain plugs? blah blah blah. I think some guys also get offended because, just like people who wanna borrow tools because they are too cheap to buy their own, people want info for nothing that others paid for. Like I said just what I've seen over the years from being a member in forums like, VW, Jeep, Ford truck, Buell, and Harley. This forum, however, doesn't seem like the regulars get as offended as on some of the other boards.
Just my observation.

 

totally agree -- I use the Walmart 15/50 for the past 47k miles on my 107 RG and 28k miles on 06 SG S&S 124 -- use belray severe gear in trans and harley primary fluid no big deal -- get greasy and have fun -- my bikes have not been to the dealer since the 1st service---with so many videos out there no immediate need for a service manual