Take a little time and do some more research. NCBrew knows his business. The HD synthetic may not be what you want. The HD dealership should be accommodating with your choice of oil in the service department, but do your homework and show them that you know what you are talking about.

BClem

 

Excellent input BClem and Brew...
Now I guess I need to botain the knowlege to decide which brand to go with.

-Billy

 

Mobil 1 vtwin 20w-50,put it in all three hole's,run's great shift's smooth.[8D]

 

Billy;
Go to my website and do some research. http://synthetic-oil-tech.com/1180361
There is a lot of infomation there. And remember, I can answer any lubrication question you have. No one at Wal-mart can.
E-mail me if you have any questions. syntheticoil@mchsi.com

NC Brew

 

Mobil 1 vtwin 20W-50 is not the best lube for your transmission. Amsoil Series 2000 75W-90 is.

AMSOIL Recommendations
For 883cc and 1200cc Sportster use 20W-50 in the engine and transmission. For 1340 and 1450 engines use 20W-50 in the engine and Series 2000 75W-90 gear lube in the transmission and 10W-40 Motorcycle oil in the Chaincase. Shovelheads, Panheads & Flatheads use SAE 60 Racing oil in the engine.


20W-50 Synthetic Motorcycle oil is part # AMV-01 (case of 12 Quarts)
10W-40 Synthetic Motorcycle oil is part # AMF-01 (case of 12 Quarts
Series 2000 75W-90 Gear Lube is part # TGR-QT 1 quart
SAE 60 Racing Oil is part # AHR-QT 1 quart

Call 1-800-956-5695 and give them my dealer # 1180361 and it will be delivered to your door in a few days.
E-mail me if you have any questions.
syntheticoil@mchsi.com
NC Brew

 

After reading this topic and doing a little research it seems like all the recommendations are for using synth oil in the V-twins but I haven't seen any recommendations for my 1200C. Any advice on this...it seems like synth is the way to go but...

 

As in my previous post;
1200cc Sportster use 20W-50 in the engine and transmission.
20W-50 Synthetic Motorcycle oil is part # AMV-01 (case of 12 Quarts)

Call 1-800-956-5695 and give them my dealer # 1180361 and it will be delivered to your door in a few days.
E-mail me if you have any questions.
syntheticoil@mchsi.com


NC Brew

 

NcBrew, I thank you for the post with my quote, just kidding,but the reason I put 20w-50 in all three hole's because that's what the dealer said to put in. I have read some concern's about that but I feel it's just like anything else,nobody like's change. So for now that's what I'm going to run until I'm convinced otherwise,or the dealer advise's me to change. Thank's again for the info.

 

New here, so bear with me while I get my feet wet. I use 15w-50 Mobil 1 red cap (not the overpriced V-Twin version) in my '87 Sloptail. Use it in the engine and primary. I use Castrol synthetic 70-90 gear oil in the tranny. Was going to switch to Mobil 1 in the tranny, but started reading some "horror" stories on a couple other boards from HD mechs on trannies failing when using the motor oils, HD synth included. The mechs pretty much thought the problem was the oil. Anyway, I am staying with the gear oil.

My Sloptail has over 100k miles on it. I replaced the base gaskets last winter and could still see the hone marks all around my cylinders. I'm sold on synthetic, especially with riding in the heat as I do here in Texas. Any good synthetic will work fine. I like Mobil 1 'cause I get a 5 quart jug for less than $20. I don't use the V-Twin version 'cause I've seen chemical composition test results that show little difference between the two. I change all 3 holes every 2500 - 3000 miles. Also use NAPA filters. They're made by Wix and are excellent filters for a reasonable price.

 

BClem,

Tell me what you know about Red-Line 20W60HD. Do you have any test info? I'm in Texas and use it when it gets in the 80s and above (which is over 3/4 of the yr).

I put about 20K-25K a yr so no prob running 20W50 when its cold since I cange oil every 5K which is about 4-5 times a yr.

Thanks,

Wake