Diff Oil Change - How much Additive

[biglump]

Haven't been on here for ages, but having dragged the car out of hibernation just in time for the snow and rain, I'm going to be changing diff oil in next couple of days.

I've bought the appropriate purple goo from the Fishmeisters...question is how much of the friction modifier stuff should I add?

Thanks in advance for your help

[S800VXR]

Varies but id throw half a bottle in and go from there adding more till the creaking stops.

[Yanayaya]

I asked the same question recently http://www.pistonheads.com/gassing/topic.asp?h=0&a... and I was told by Monkfish1 in regards to the amount of oil needed for the gearbox, diff and engine.

monkfish1 said:

2 bottles for the diff. You probably wont need the modifier. 5 bottles for the gearbox with a bit left over. Engine is 6.2 litres.

and also this about the amount of modifier to use

monkfish1 said:

yanayaya said:

Yanayaya said:
If the modifier helps then I'd like to include it, just to make sure I give the diff the best care it can get. Although not needed would you recommend?

To much modifier will mean your LSD doesn't lock up at all. Nice and queit, but not much use in getting power to the road. The diff oil has a modifier blend in it already that is usually enough to make it work properly. Sometimes on higher mileage diff they need a little extra.

[biglump]

Cheers chaps...and thats why i love this forum.

Plumped for leaving it to Mr Johnson to sort as work is busy and its frikking cold out!

Goodwood beckons...

[ARAF]

biglump said:

Cheers chaps...and thats why i love this forum.

Plumped for leaving it to Mr Johnson to sort as work is busy and its frikking cold out!

Goodwood beckons...

Great solution.

[biglump]

If in doubt get someone who knows what thwythey're g!