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Author Topic: Crank case oil. (What should i use?)  (Read 3373 times)

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Crank case oil. (What should i use?)
« on: January 25, 2014, 03:17:58 pm »
need a little help on what oil I should use in my crank case. its a 1988 lt250r with vforce 3 reeds and a complete fmf exhaust. I had taken the entire bike apart and haven't touched the engine for a while. all help is appreciated.
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Re: Crank case oil. (What should i use?)
« Reply #1 on: January 28, 2014, 07:32:38 pm »
I use ams oil 20w50 , it's there Harley oil, but it has no friction modifiers to hurt the clutch fibers, I use it in my gear box an had no troubles!
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Re: Crank case oil. (What should i use?)
« Reply #2 on: January 28, 2014, 07:35:12 pm »
This is the oil.
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Re: Crank case oil. (What should i use?)
« Reply #3 on: January 28, 2014, 08:39:45 pm »
The suzuki 4 stroke factory oil works good. I used now ams oil 4 stroke atv synthetic 10w 40w in winter and 20w50w in summer
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91 Lt250r Bartlett port and head mod v force 2 Hinson Clutch Basket Cool Head Scp Pipe and silencer ,KN air filter ,EBC clutch, Ohlins  Triple rate Shocks Redone by PEP Shocks,Stock Rear Shock Redone By Pep Shock,  DG nerf Bars , Lonestar axle 2+2,Lonestar Swingarm ,Douglas Red Label rims.

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Re: Crank case oil. (What should i use?)
« Reply #4 on: January 28, 2014, 09:02:46 pm »
ATF type F works great just need to change it frequently.
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Re: Crank case oil. (What should i use?)
« Reply #5 on: January 28, 2014, 09:09:17 pm »
Isn't ATF too light , thin.... No shock or cushion for the gears?
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Re: Crank case oil. (What should i use?)
« Reply #6 on: January 28, 2014, 09:10:03 pm »
Ive tryed lots of dif oils but really like ATF
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87 lt500r hybrid custom intake with 48 lectron, v2 reeds, scr dune port,4'' over swinger
87 lt250 mild porting, shear pipe,v3 reeds,4''swinger
91 lt250r stocker , fmf
83 RM500 build in progress
85 465rm hybrid dune port, v3 reeds,hand con pipe ,vm 46mm carb 4'' swinger ,in progresss

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Re: Crank case oil. (What should i use?)
« Reply #7 on: January 28, 2014, 09:47:56 pm »
Lighter oil no drag! Maybe a Lil more hp to the ground, maybe like a one tenth?? How often do u change it?
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Re: Crank case oil. (What should i use?)
« Reply #8 on: January 28, 2014, 10:57:52 pm »
I heard them changing after every ride. I run my ams oil for a month or two at a time. No problems.
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91 Lt250r Bartlett port and head mod v force 2 Hinson Clutch Basket Cool Head Scp Pipe and silencer ,KN air filter ,EBC clutch, Ohlins  Triple rate Shocks Redone by PEP Shocks,Stock Rear Shock Redone By Pep Shock,  DG nerf Bars , Lonestar axle 2+2,Lonestar Swingarm ,Douglas Red Label rims.

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Re: Crank case oil. (What should i use?)
« Reply #9 on: January 29, 2014, 06:54:22 am »
Every few rides. If these things had sight glasses you could see it start to change color like purplish black and you know to change it. But lt's don't have a sight glass.  :-\
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Re: Crank case oil. (What should i use?)
« Reply #10 on: February 15, 2014, 01:58:17 pm »
Use wet clutch oil with no addatives. You dont want anything affecting the friction of the clutch disks. You should change your oil frequently. Oil breaks down with heavy cluch use and collects a lot of particle cantamination from clutch wear. Frequent oil change also alows you fo see if coolant is leaking into the case and metal peices from broken components in the motor.  I never go more then 10 or 12 hours riding between changes.
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Re: Crank case oil. (What should i use?)
« Reply #11 on: February 15, 2014, 07:59:13 pm »
Another guy voting for type F ATF !!!! I know it sounds crazzzzzzzzzzy. But it is a beautiful thing! and it works! I change every 5-10 hrs. Its cheap, why not?
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Re: Crank case oil. (What should i use?)
« Reply #12 on: February 16, 2014, 01:10:35 am »
Type f too. Especially when it's cold 
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Re: Crank case oil. (What should i use?)
« Reply #13 on: February 16, 2014, 08:23:32 am »
Valvoline Type F, O'riley's has it behind the counter.

Change it every 8-10 Hours
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Re: Crank case oil. (What should i use?)
« Reply #14 on: February 16, 2014, 09:07:37 am »
Hears what the guy at moble 1 said

Ask Mobil   
         Should ATF or Motor Oil be Used in a Harley-Davidson Primary
 
Ask Your Stickiest Question. . . Or ask us something you’ve always wanted to know about using our products. We’ll sort through all the submissions and present the best questions to our automotive experts. We'll share the questions and their answers here.

   
Question:
Should ATF or Motor Oil be Used in a Harley-Davidson Primary
I understand that there are some people who are touting the benefits of using ATF in a Harley primary. What are your thoughts on using ATF in the primary vs your 4T 10W-40 motorcycle oil?
-- Robert Dunn, West Chester, PA

Answer:
Automatic transmission fluid (ATF) would probably work fine in your primary but in the end you will have to decide if you are satisfied with its performance.  Every biker “feels” his shifts and knows his sensitivity to clutch slippage. Every modern ATF is designed with specific frictional characteristics that complement transmission performance with very specific friction materials. Depending on which fluid you choose, you may or may not be satisfied. And even then your buddy may try the same fluid and have yet a different opinion. 
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87 lt500r hybrid custom intake with 48 lectron, v2 reeds, scr dune port,4'' over swinger
87 lt250 mild porting, shear pipe,v3 reeds,4''swinger
91 lt250r stocker , fmf
83 RM500 build in progress
85 465rm hybrid dune port, v3 reeds,hand con pipe ,vm 46mm carb 4'' swinger ,in progresss

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Re: Crank case oil. (What should i use?)
« Reply #15 on: February 16, 2014, 11:56:48 am »
Sounds good, I just always worrie abt the trans gears an shift forks. There very expensive, ive got over five hundred in gears in my 86 an my new motor ,88 up I've got more than that in its gear box
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Yeah it's fast an no you can't ride it
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