Diff oil myth

[muzz2005vzute]

Ok my mate has a vx commodore v6. It was only spinning one wheel in a burnout. He was told by someone to put thicker oil in the diff and it will spin doubles. I didn't believe him but we tried it anyway and surprisingly enough it actually worked. Is this just somthing that could of happened because it had fresh oil put in or would thicker oil actually do this?

 

[XioiX1983]

never heard of that before..... welding yes, oil don't think so, would have to be a number of other issues for that to work (as in the diff is on the way out). I could very well be wrong though.

 

[petern64]

when the sun gears & the planet gears are aligned it can produce an LSD affect, very rare occurrence !

 

[muzz2005vzute]

How do they align? Can you dumb that down a bit, I'm still learning haha

 

[Big-Al]

Hmmm if it works and it's not an LSD then I can only guess the thicker oil hampers the sun and planetary gears which would be generating a **** load of heat during the burn out.

 

[EYY]

If both tyres pose the same resistance as one another, both will spin during a burnout. Only when the resistance is measurably less for one wheel, that one will spin and the other will stay still. I think it has more to do with the surface you're driving on, and whether you have the front wheels straight and how level the surface is.

 

[muzz2005vzute]

Yeah I agree because I have a vz ute with a non lsd diff and it will do doubles when I'm sitting in flat ground but only for a little bit then will go into a single

 

[A9L]

I know I'm probably saying what everybody know but: The torque (twist) of the motor lessens the weight/resistance on the RH rear tyre, in a way, lifting it, that's why your open diff usually spins the right hand side. Also why the left hand front lifts slightly higher on hard take off (easily evidenced by big power cars launching at the drags).

 

[delcowizzid]

thicker oil will make the spider gears harder to turn and could quite possibly make the diff twin more but will suck a fair amount of extra hp out the engine and lower economy

 

[SavVYute]

when the sun gears & the planet gears are aligned it can produce an LSD affect, very rare occurrence !

Makes for a bad trip though.