what are your thoughts on putting car oil in motorcycles is it realy all the same?

 

In my f4i and my 1000rr I use Mobil 1...M1-108 filter and Fully Synthetic Extended Performance (Gold Cap) 15w-50 There is another fourm Im on and they did an analysis on oils and apparently this oil outdid any other oil including Repsol The 1K runs like a champ with it Bit pricey though

 

Alright cool everyones always had something else to say bout it i gotta track bike 03 r6 that the guy was using mobil one but i have yet to put it in my street bikes. thanks

 

a resounding **** no to car oil!! it WORKS.. yes.. but it's not designed for use with a wt clutch or to stand up to the shearing of the trans in action.

i like repsol.. as well, i kinda have to.. it's what we sell at my shop.. they're one of only a VERY few companies that oversees EVERY single fckng thing.. from extraction to refinement to packaging and shipping.. EVERYTHING.. so they have awesome Q.C. on thier ****.. motul, elf, bel-ray.. theres alot of good oils out there.. it's a personal preference.. but as far as car oil in a bike.. eh.. like i said.. it'll work, but the additives for use with a wet clutch do not exist in them. fine in a pinch tho. but i'd suggest a change after getting where you need to go if you find yourself low.

full syn has alot of claimes of improving shift feel.. don't use it with a new or rebuilt motor with fresh rings.. they'll never break in and seat, leading to compressin loss and blow-by and ring skidding/flutter.

some cats see the clutch slipping with a switch to syn.. thats usually because of a slight glazing on the plates.. easily fixed by scuffing the plates with 600 grit or replacing it or stepping up the stack height or shimming the springs .020" or so..

 

No car oil. There is something else in motorcycle oil (zinc maybe) that is there for the clutch and trans. I have heard of people using Rotella (Shell diesel oil) because it has the same stuff in it.

 

The Mobil 1 I mentioned is good to use in a bike, I know a lot of racers that use it in their street and race bikes, it is not an energy conserving oil which it will work in bikes

Heres some analysis on some oils

http://www.hooliganbiketech.net/hond...frameindex.htm click on oil analysis

Ive dug pretty deep into oils and I know car oil is not to be used in a bike but I assure you the Mobil1 EP (Gold Cap) is better than "Honda" oil (which is proven to no better than a walmart oil) and holds well past the life of Repsol...Im about 200 miles into my switch (on my 1000rr) to Mobil1 EP (had Respol 4T prior to this change, which is a great oil and my second choice for oil to use) and so far I notice a big difference, firmer/smoother shifts, pulls harder on low/mid/high end also.....it already has me making the switch in my f4i

 

Tell that to my f4i with a stock clutch and 34k miles

I use synthetic car oil that is energy conserving!
Oh, and my f4i has ONLY seen cheap car oil from walmart from 12k - 34k, with $2.50 super tech filters

My friend that uses honda oil on every change, has 14k on his 600rr, his clutch is gone

 

I use castrol gtx 10-40 car oil in all my ****, never any problems

 

I use Amsoil, 20,000 miles on the stock zx10 clutch so far so good.

 

I only run Amsoil 10-40 Motorcycle Synthetic in my bikes; I've been told the same thing as others in this thread have posted; Automotive Grade oils use friction modifiers which are supposed to hurt the wet clutches that our sportbikes use. That alone made me stay away from it.

 

This is true if the oil is labled "energy conserving"

 

Nooooooo nooooo car oil!!! Dont do it!

 

+1.....I love these oil threads....so much "knowledge" being thrown around!

43,000 miles on my old F3......nothing but Castrol GTX...stock clutch...

 

i use castrol bike oil and fram ph6607 , or m108 mobil filter

 

I use Valvoline 4 cycle motorcycle oil
here this link shows what oils are at Auto Zone including Mobil 1 motorcycle oil
http://www.autozone.com/autozone/cat...questid=437283

 

+1 on the castrol gtx,been running that forever,in my mustang then gixer,then f4i