Gearbox oil - High performance oil needed

[BigBoyLemonade]

[color=#006666:post_uid0]What is the best oil to use in our geabox's? I am using ****ty Castrol VMX80 oil at the moment and its disguisting... Soon as the box warms up the oil must be frothing cause it becomes really hard to change gears... I have been told to run Synthetic... I need 4 litres... I will spend upto $35 a litre...[/color:post_uid0]

[BigMal]

[color=#000000:post_uid1]Didn't you ask this before. I am serious when I say that the
mazda uses auto trans fluid which is heaps thinner. Go to
Repco and look at the oil book and I am 99% sure it will
confirm what I am saying.

Regards

Mal[/color:post_uid1]

[BigBoyLemonade]

[color=#006666:post_uid0]Nah I want something better... Geoff said he uses the good stuff and he hasnt had problems with his box and thinks it could be the good oil...[/color:post_uid0]

[BigMal]

[color=#000000:post_uid1]So whats the good oil then ??
Have heard a lot of guys rave about Redline oil in
the Mazda/Ford boxes but do tell what Geoff uses.

Ta

Mal[/color:post_uid1]

[nupes]

[color=#000000:post_uid0]Hey Tony,
Do you (or anyone) know where to get Redline MT90 in Canberra mate? Im trying to cure my notchy gearbox.

Mal, I searched this 626 site that said this about using ATF in an MTX gearbox

"Some manuals list ATF as an appropriate oil - this is incorrect. Engineering tolerances for ATF v 75w90 gearbox design differ.
A synthetic gear oil provides better gear-teeth protection & lubrication, reduces transmission losses during warmup so aiding the environment regarding emissions & fuel usage."
http://homepage.ntlworld.com/dorothy.bradbury/probemx/index.htm[/color:post_uid0]

[Rupewrecht]

[color=#000000:post_uid0]On the topic of gearboxes (well kinda) i've got a mate who's got a KH Laser TX3. he's always breaking boxes, but most recently had an Astina SP20 gearbox installed. Apparently it mated right up (the 2.0 being a BP stroker), and only needed some minor fiddling with driveshafts to get it all working.

And it's supposed to be a lot stronger than the laser gearboxes that he used to run. Which i'm guessing would be the same as the 89-94 SP gearboxes...[/color:post_uid0]

[Toyboy]

[color=#000000:post_uid0]Wouldnt happen to be KH_TX3(steve) would it rupe :p[/color:post_uid0]

[Rupewrecht]

[color=#000000:post_uid0]LOL yeah it is :D[/color:post_uid0]

[Toyboy]

[color=#000000:post_uid14]Thought so,he has mentioned about being in your car b4 in the fordlaser forums :p That car of his for a N/A goes like a freak apparently,good run for me :)[/color:post_uid14]

[Rupewrecht]

[color=#000000:post_uid0]it did a 15.4 (or 15.7, not sure) at heathcote raceway the day i was there! i was especially pissed off coz i only did a 16.7...

but then again he was using stockies and had stripped his car and i was stock with a leaky exhaust...well thats my excuse anyway!

but i cane his arse now *:;): *:D[/color:post_uid0]

[Toyboy]

[color=#000000:post_uid14]Thats the way,show up that laser :p[/color:post_uid14]

[BigMal]

[color=#000000:post_uid1]Whats an SP20 box worth ??

Ta

Mal[/color:post_uid1]

[Rupewrecht]

[color=#000000:post_uid0]dunno - i'll ask him what he paid...[/color:post_uid0]

[Toyboy]

[color=#000000:post_uid0]Hey Rupe,KH_TX3 has crashed his car,did you know that?? :( He posted it in the laser forums ???[/color:post_uid0]

[Rupewrecht]

[color=#000000:post_uid0]yeah i just heard! was talking to him on #mccr! :(

oh, and he paid about $1k for his gearbox.[/color:post_uid0]

[nupes]

[color=#000000:post_uid0]Hi Tony,
I bought my Redline MT90 GL4 Gear oil last week, the redline guy came down to Canberra to do some research on who can be the distributors in Canberra. Pretty soon I think we will be able to get it here somewhere?
It aint cheap though, 4lts cost me about $104

Cheers

Nupes[/color:post_uid0]

[BigBoyLemonade]

[color=#006666:post_uid0]Hey nupes!

I am very interested in getting some so if you can get some just let us know... send pm if you have the guys details[/color:post_uid0]

[nupes]

[color=#000000:post_uid0]Hey Tony,
Here are the details, the guys name is Brendan, he's in Wetheral Pk in Sydney and his mob is 0412040500

Make sure you get MT90 and NOT MTL

He can send it to you by post, I think its another 7 bucks

Cheers

Nupes[/color:post_uid0]

[TURBO MAZDA]

[color=#000000:post_uid0]What all this talk about sp20 gerboxes fitting into 89 - 94 astina , Please tell more , I'am still on my first box , but got some trouble with going back into 3rd gear. It goes in 3rd when i go up through the gears but i can't go back into 3rd, for example say i'am in 5th, then change to 4th then i can't get it into 3rd, but there is no problem going 1st , 2nd then 3rd. *anyone no what da F_ _K is going on.


Does the sp20 come with a limited slip diff ???[/color:post_uid0]

[Rupewrecht]

[color=#000000:post_uid0]not sure what's wrong with your gearbox, but it could be worn syncros?

but a mate with a KH Laser TX3 had an SP20 gearbox fitted to his car, as apparently they're a little stronger than the standard BP box. But he did need customs driveshafts made up to fit.[/color:post_uid0]

[TURBO MAZDA]

[color=#000000:post_uid0]Does anyone no if the sp20 have a limited slip diff[/color:post_uid0]