Gearbox

[Monaro5.7]

Just had my diff seals done and the propshaft overhauled. But last night after a bit of a run on the motorway doing 2000rpm sound like the box is in need of a oil change.

So what oil grade does the box take?

[gsd2000]

gearbox takes dex3 atf

[PE_V8]

Royal Purple Synchromax Oil according to monkfish if its a manual

[raving]

Put factory approved Dexron in it
I dont think Tremec have ever tested Royal Purple in their product

[ARAF]

raving said:

Put factory approved Dexron in it
I dont think Tremec have ever tested Royal Purple in their product

Seems to work though. I would think that either/or is a pretty good compromise?

[neiljohnson]

I've used a comma ATF in quite a few now & have had good feedback
I can't remember which one it is but if you pm Vincem he works for them & is the one that put me onto it in the first place

[jameshsv]

neiljohnson said:

I've used a comma ATF in quite a few now & have had good feedback
I can't remember which one it is but if you pm Vincem he works for them & is the one that put me onto it in the first place

Nice info neil will pm vince mine needs doing soon.

[VinceM]

Mvatf plus is the one although aq3 would be fine too. Mine is running aq3. You will need 4.4 litres. Dexron 3 is the spec it says it on the side of the gearbox on mine.

Rear diff is royal purple or castrol only if standard.

Edited by VinceM on Friday 11th July 21:25

[Monaro5.7]

VinceM said:

Mvatf plus is the one although aq3 would be fine too. Mine is running aq3. You will need 4.4 litres. Dexron 3 is the spec it says it on the side of the gearbox on mine.

Rear diff is royal purple or castrol only if standard.

Edited by VinceM on Friday 11th July 21:25

I have Royal Purple in the box and its been in for about 4 years, so gonna change it to the comma stuff as i keep that in stock and i might stick some Forte friction reducer in there aswll

[jameshsv]

So which would be the prefered oil to use in the gearbox.!

[neiljohnson]

jameshsv said:

So which would be the prefered oil to use in the gearbox.!

The mvatf is the comma stuff I've used & works very well
It's also a lot cheaper than the royal purple

[jameshsv]

neiljohnson said:

The mvatf is the comma stuff I've used & works very well
It's also a lot cheaper than the royal purple

Thanks neiljohnson.

[THUNDER STORM]

While we are talking about gearboxs can some one please tell me how to check for correct oil level setting between oil changes, as I know it is not checked at the point that says oil level on the G/box.

Also a photo of the correct point to oil fill, I think its through the reverse switch hole or something like that. dont want to take out wrong part.

My car is 2005 Monaro VXR with LS2 6l engine.

Thanks in advance.

Ade

[neiljohnson]

THUNDER STORM said:

While we are talking about gearboxs can some one please tell me how to check for correct oil level setting between oil changes, as I know it is not checked at the point that says oil level on the G/box.

Also a photo of the correct point to oil fill, I think its through the reverse switch hole or something like that. dont want to take out wrong part.

My car is 2005 Monaro VXR with LS2 6l engine.

Thanks in advance.

Ade

Its near on impossible to check the level tbh

The fill procedure is to fill via the oil level plug till it runs out then remove the reverse light switch & add a bit more (either 1/2 or a full litre someone on hear will remind me) then that will be correct.

[snowwolf]

Had Neil change mine to the comma oil in the box and it felt better straight away and got better the more it was used

[snowwolf]

neiljohnson said:

Its near on impossible to check the level tbh

The fill procedure is to fill via the oil level plug till it runs out then remove the reverse light switch & add a bit more (either 1/2 or a full litre someone on hear will remind me) then that will be correct.

When we done mine a few weeks back we decided on a litre over, I said it will chuck out what it didn't want but it's not put any out the breather

[VinceM]

From memory on the Monaro it's an extra half a litre.

[MyM8V8]

snowwolf said:

Had Neil change mine to the comma oil in the box and it felt better straight away and got better the more it was used

Better than what (type of oil)?

[neiljohnson]

MyM8V8 said:

Better than what (type of oil)?

Had royal purple in it, was a few years old though