Type 9 Gearbox Oil

[DT36]

What oil are you using in your Type 9?

Going to buy some GL4 this week, but debating between COMMA Semi-Synthetic GL4 SX75W-90,  or a more expensive Redline Synthetic MTL 75W-80 GL4. 

 

[eeb43]

atf

[DT36]

27 minutes ago, eeb43 said:

atf

How do you find the ATF compared to the traditional manual gearbox oil? 

[colr6]

75/90 semi in all mine inc straight cuts.  You've only t o look at Vauxhall/Renault / Nissan all coming off ATF in their boxes due to premature bearing failure. They only use ATF in the Ford T5 box due to the design of the sychro rings having material similar to auto box friction material and needs the thinner oil to get in them.

[katana]

Agree - AFT is like 100,000 mile old, viscosity wise compared to new GL4 recommended gear oil - totally wrong application.

[Kenbex522]

Yes Semi synth in mine too as recommended by both BGH and First Motion who both say dont use ATF in T9's.

 

Here is an article on the T9, the bit about the oil is on the right.  http://www.classicfordmag.co.uk/wp-content/uploads/2017/07/Classic-Ford-May-2011-Ford-Type-9-five-speed-guide.pdf

[fat boy slim]

very interesting, using ATF will kill your gearbox in 100 miles. i must be lucky as its all i've ever used in all 3 of mine since the late 80's, used in both road and competition cars. never had any failures in all that time. the only things that were changed when rebuilding were syncros due to the de rigeur cracking no doubt helped along by the rose jointed stick and the driver ragging it into gear. maybe the ATF you buy today is different to what was available back in the day

[DT36]

Strongly leaning towards the COMMA Semi-Synthetic GL4 SX75W-90 now. It was between this and Redline, plus this save the pennies to buy a crank sensor bracket

[Kenbex522]

I haven't got it to hand now, but I did have the first edition Haynes manual for the first Sierra which I'm sure said ATF as the lubricant for the T9. But given the early 5 speed Sierras, of which I had one that did, had numerous problems with gear boxes going very noisy due to lubrication problems, Ford also changed the oil spec quite quickly to semi synth as well as certain component changes. Some mentioned in the article I linked too.