Maintenance & Technical > KX500 Original

Crankcase survey...

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Paul:
Well, I'll chime in here. I use Maxima MTL 85 Endurance in mine and have been very pleased. At $5.95 a litre it's like getting the 5th one free.

EZ-Rider:
I usually run B&M trick shift but occasionaly if the store is out I run either a standard atf or Mobil 1 15/50.
In my bikes I get 0 slippage and effortless shifts which is something  didn't get from the Bel Ray. If you haven't experimented and your trans feels notchy it would be worth the couple of bucks to see if there is a difference.

yzmike:
:?:  Man, am I confused, I've never heard of such diverse opinions about gear fluids. I'm totally paranoid about the motor's lower end, so reading that the successful use of automotive products in a two stroke astonishes me. Can the Mobil 1 15/50 have enough shearing properties to engage clutch plates?  Can the ATF have enough emolients to adequently protect the gears? Tell me more.

yzmike:
I just hopped over to the YZ 490 club messages, and they are discussing trans fluids also, the horror stories are painful to read.  :cry:  Check out the site!!!  :idea:

Hogwylde:

--- Quote from: yzmike ---:?:  Can the ATF have enough emolients to adequently protect the gears? Tell me more.
--- End quote ---


Well, think about what's IN an automatic transmission.  Slip clutches and gears.  The ATF has to have enough lubricating properties to properly lube all the gears and bearings in your auto tranny.  Plus, it has to properly lube the slip clutches and bands in the tranny that are effectively the gears.  It also functions as hydralic fluid to pressurize the various actuating devices in the tranny that make it function.  And.....how often do you change your auto tranny fluid??  50,000....100,000 miles....NEVER!  

Most automotive engine oils have additives that reduce friction.  These additives may tend to prevent the clutch from locking properly and may even induce slipping by reducing the friction between the plates and fiber discs.

I've had good results with ATF.

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