Which Diff Oil

[THUNDER STORM]

Hi Guys, I know this question as been asked in the past, but forgot the answer regarding lsd diff oil to use.

At present I have Royal purple with friction modifier, and I still get hunting of the drive sometimes when making slow tight turns, such as turning in a cul-de-sac even when adding more modifier.

I have checked the usual things like play in drive shafts, prop shaft driveline including centre bearing,
( recently changed). Therefore I am pretty sure its the lubrication oil that the lsd does not like.

So my question is what oil should I change to,( preferably without adding a modifier) so the problem is sorted. I know some of you out there will have the answer, thanking you in advance.

Ade

[jameshsv]

Unfortunately the diffs do make some funny noises irrespective of what oil is used

[stu vxr]

Millers - go to their website, no modifier needed full stop.

[fred bloggs]

I used castrol syntraxLSD from demon tweeks in my old hsv.No modifier. The diff doesnt clunk at all now.

[monkfish1]

If you are needing extra modifier with the RP and its still noisey, then, realistically the cones in the LSD probably have some significant ridges/scoring. There comes a point where no amount of modifier will fix it.

[THUNDER STORM]

Thanks guys, all points noted and I will act on them.

Ade

[steve2568]

I used to use Redline in the RX8 which also has a LSD, came recommended from a few people and GroupB Motorsport in North Wales

[THUNDER STORM]

Oil ordered, thanks guys.

Ade

[THUNDER STORM]

Hi guys update on diff oil.

Purchased the Castrol oil recommended above, drained diff oil out and it was black (royal purple), the oil as been changed 3 times now in 57,000 miles.

Put new oil in and now no clunking great.

But why the oil so black?

In my experience diff oil should not get that black, any thoughts guys.

Ade

[MyM8V8]

THUNDER STORM said:

Hi guys update on diff oil.

Purchased the Castrol oil recommended above, drained diff oil out and it was black (royal purple), the oil as been changed 3 times now in 57,000 miles.

Put new oil in and now no clunking great.

But why the oil so black?

In my experience diff oil should not get that black, any thoughts guys.

Ade

Black normally means Carbon (i.e. from oil burning). Let us know how you get on with the Castrol.

I'm on Miller CRX but have Wavetrac helical diff.

[steve2568]

THUNDER STORM said:

Hi guys update on diff oil.

Purchased the Castrol oil recommended above, drained diff oil out and it was black (royal purple), the oil as been changed 3 times now in 57,000 miles.

Put new oil in and now no clunking great.

But why the oil so black?

In my experience diff oil should not get that black, any thoughts guys.

Ade

3 times in 57k seems a lot, surprised its in that state if its been done that often to be honest, mine must be like tar

[snowwolf]

Black oil is quite normal and still doing its work as it should, additives in oil are normally the cause of it going dark in colour, if it was lighter in colour then chances are water has mixed with the oil but that would be unheard of on a road car, if your oil was thick and dark then it time for concern.

[steve2568]

snowwolf said:

Black oil is quite normal and still doing its work as it should, additives in oil are normally the cause of it going dark in colour, if it was lighter in colour then chances are water has mixed with the oil but that would be unheard of on a road car, if your oil was thick and dark then it time for concern.

Find out next week, gearbox and diff with RP at MWP

[snowwolf]

I have never been keen on RP

steve2568 said:

Find out next week, gearbox and diff with RP at MWP

[steve2568]

snowwolf said:

I have never been keen on RP

steve2568 said:

Find out next week, gearbox and diff with RP at MWP

I`ve read numerous posts on this forum and was a little torn, both Monkfish and MWP use it for the cars so I will be swayed by them but its all about opinions. Out of interest mate what are you running in yours?