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Possible Temporary Solution For Warn Syncros

shaund
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shaund Enthusiast

shaund

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Hi Guys,

Just thougnt I'd share my experiances...

Seems its a pretty common complaint for people to have trouble with worn syncros. My problem was with the syncro in 4th gear. The gearbox seemed to be in pretty good condition overall, but after it warmed up, it behaved like the syncro for 4th was near on non-existant.

Shifting from 5th to 4th required me to touch on the gate on 3rd to use 3rd's syncro to spin things up, and shifting from 3rd to 4th at high RPMs was equally dificult without grinding gears. I learnt to drive around it, but it still meant that things were painful if you were caining it around a track etc and shifting from 3rd to 4th at speed.

A solution suggested to me was to use an oil additive called 'Pro-ma MBL8" Its a molybdenum based oil additive. Its quite thick and grey in colour.

I added 50mL of it to the box, and after about 50-60km, started to notice a difference on the 4th syncro. ~500km later im seriously thinking that I don't need that gearbox rebuild I was thinking about doing; it works as good as any other syncro in the box.

Price I paid was about $40 for a 250mL bottle, 50mL is enough to treat the gearbox. I'm using Penrite Transaxle 75 in the box.

Its also suitable for using in engine oil too. ~100mL for a 6cyl according to the bottle. I've put some in mine and its made a very slight difference to throttle response.

I'm not looking to push this product or generate any money for myself, this is just my genuine experiance that I hope is useful to others.

My mechanic/engineer who suggested this to me sourced it for me locally in Perth. If you can't get it from where you normally buy your stuff from you can call him (Steve) on 08 9409 7920. His workshop is north of the river (wangara).

I've attached a photo of the bottle I bought so its easy for anyone interested to regonise.

Cheers!

-Shaun

post-21536-1236835310_thumb.jpg

shaund Enthusiast

shaund

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Do not use this in auto boxes or LSD's. Also, it is reccommeded that you blend it into the oil before an oil change.

Yeah, this is all very true...

Essentially make sure you follow the directions on the back of the bottle. Should go without saying really :-o

The instructions say that when you're using it in an engine, you want to put all but the last L of oil in, idle the engine until it gets up to temperature, blend your measured ammount of Pro-ma into the last L of oil thats still in the bottle, add while the engine it hot, and then go for a good drive for 30 mins. This is essentially because the MBL will just sink to the bottom of your sump and take ages to work its way around otherwise. Seems to be turbo safe too.. at least so far so good.

In the case of gearbox oil, it dosen't give you any specific instructions. I just added it to mine and started driving (i had 2-3000km old oil in it, no need for new oil yet).. eventually its worked its way into 4th syncro and done some magic ;) I'd imagine the best way to do it for gearbox would be to drop all your oil, blend it into the new oil, pump it in and go for a drive. Its pretty thick, so blending it into the oil for a gearbox would at the very least make it easier to get in there.

I'd be really interested to hear anyone elses experiences/results with this additive.

Cheers!

-Shaun

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