LSD Oil

[DEKE]

Hi All
I am looking at changing the oil in this but dont have a clue what should be in it, would be obliged if anyone on here could help.
Thanks
Deke

[KKson]

I used Carlube LS80w90 limited slip gear oil.

[Wedg1e]

I got mine from Opie Oils but I forget what it's called...

[DEKE]

All
Thanks
Deke

[Number 7]

Bit late, but I assume you know that the Powerlok diff was not standard fitment to all 350i models. I use Motul 90PA (SAE90)from OPIE oils, and I I've also used a Silkolene version in the past.

[DEKE]

Hi All
I did know they were not a standard fit to the 350i but still really dont know what make it is cant see any markings at all or is this the only make used on these in any case. What is the brand to use then, I would assume that any decent one would be ok? does it need the sae 90 or os sae 80 ok
Thanks
Deke

[350zwelgje]

Only one make used, Salisbury.
To see if you have an lsd: jack the rear of the wedge of the ground and turn one rear wheel by hand: if the other side turns in the same direction it is lsd, if it turns in the opposite one it is an open diff.

Rob

[KKson]

Simples!

[Number 7]

Sometimes there will be a metal tag secured by one of the rear cover bolts and embossed with the diff ratio and Powerlok (if it is an LSD).

[Wedg1e]

Number 7 said:

Sometimes there will be a metal tag secured by one of the rear cover bolts and embossed with the diff ratio and Powerlok (if it is an LSD).

Like this:



PL for PowrLok and 3.31 is the ratio (3.31:1). Most will have 3.54.

[DEKE]

Hi
Went underneath today with car up on ramps, tag on it says 3.54 but no sign of PL but paperwork says fitted with rare LSD option for this car. Also states it has a special 29/1000 RPM 5th gear

[Wedg1e]

Silkolene BOA 90LS, that's what I put in mine; I've just dug the Opie invoice out.

[Number 7]

DEKE said:

Hi
Went underneath today with car up on ramps, tag on it says 3.54 but no sign of PL but paperwork says fitted with rare LSD option for this car. Also states it has a special 29/1000 RPM 5th gear

As suggested above, worth turning the wheels off the ground to confirm whether it is actually an LSD.

[Wedg1e]

DEKE said:

Hi
Also states it has a special 29/1000 RPM 5th gear

Now that would be something worth knowing more about if it's genuine... I've never heard of it before, not seen it mentioned on the SD1 or Landrover sites. I always thought they missed a trick by not making it a proper overdrive ratio.

[DEKE]

Hi
Basically what the paperwork says is with this it you gives you 90 MPH at 3150 revs, cant tell you if this is true only bought it in August last year and have not done many miles with it in fact too few. Car sorned at moment but will be on the road April. May well try it then, might have a chance early in April too take car on a closed track to try watch this space.
Deke

[Wedg1e]

IIRC my car (standard LT77 box and 3.31 final drive) does 84mph at 3000rpm according to the speedo, 82 according to Mr. Garmin.
Which is a bit disappointing, because my Connect van does 80 (satnav) at 3100 rpm with half the cylinders and less than half the capacity - and is more economical to boot!

[adam quantrill]

... all on "your private road" of course!

I use the Castrol LSD oil - Hypoy LS.

About time I used the other half now and changed it...

[DEKE]

Had another look today and found the tab with PL on it higher up on the diff so would seem defo an lsd but with the 3.54 ratio, will jack up another time and just check as suggested
Thanks
Deke

[Wedg1e]

adam quantrill said:

... all on "your private road" of course!

I use the Castrol LSD oil - Hypoy LS.

About time I used the other half now and changed it...

Of course I should have said 'is geared for'... but that would be a lie.
It was an indicated 103 at a Garmin 100 up the M69 with Rog the Tallbloke in the passenger seat coming back from the 'Fest a few years back that made me realise that not all TVR speedos tell porky pies I'll settle for 3% error (it's actually 2mph/% up to about 80 - er, on that private road of course )

Now was that kph...

[adam quantrill]

God ya ;^)

Mine is now almost spot on with the 16" rims on the back.

Apart from anything else when you're on limited mileage insurance it seems silly to give away 3-5% of your allowance every year (equivalent to a tenner in insurance, when you think about it...)