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Best gearbox oil please?
Posted: Wed Feb 16, 2011 6:15 pm
by Barrington
Hi guys looking for some advice please i want to change my ATF So can you guys please recomend the best stuff to go for i want the best stuff possible, so who uses what? many thanks Barrington,
Re: Best gearbox oil please?
Posted: Wed Feb 16, 2011 6:18 pm
by francophile1947
Somebody recently recommended Millers. I used Comma from my local motor factor - grade is Dexron 3 or equivalent

Re: Best gearbox oil please?
Posted: Wed Feb 16, 2011 6:23 pm
by Barrington
Is comma a decent one John? so when i go into the motor shop i just ask for Dexron 3? cheers,
Re: Best gearbox oil please?
Posted: Wed Feb 16, 2011 7:08 pm
by AlliDelta
The latest oils exceed dexron 3. Some have friction reducers added to prolong gearbox life, also cold and hot performance is supposed to be better, quicker to change into 4th gear from cold and better hot weather protection. Not that we get any really hot weather! I have just had the oil in my gearbox changed to help with diagnosing a fault and it is a higher spec oil. Shifting is a bit smoother than before, you can hardly feel 2nd to 3rd! I think the one someone recommended to me was Millermatic dtf or something along those lines...
Re: Best gearbox oil please?
Posted: Wed Feb 16, 2011 8:00 pm
by francophile1947
Barrington wrote:Is comma a decent one John?
I really don't know, but a heck of a lot of places sell it and I've had no problems

I just looked at all the ATF on the shelves until I found one that met Dexron 3 spec.
Re: Best gearbox oil please?
Posted: Wed Feb 16, 2011 10:27 pm
by lazyb5
I use carlube q3 which meets the Dexron 3 spec.
Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 3:42 am
by Northern Bongolow
millermatic ATF DM far exceeds dexron 3. ive used it on 3 motors and its really good stuff, good service/change intervals too.
be carefull not to get millermatic ATF UN, thats dexron 2 equivalent.
take the sump off though, (gasket is reusable if your carefull) and clean the filter out,and blow the oil pipes out to the rad, this way you will get a full oil change.
Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 11:56 am
by Barrington
Thank you john nice one
francophile1947 wrote:Barrington wrote:Is comma a decent one John?
I really don't know, but a heck of a lot of places sell it and I've had no problems

I just looked at all the ATF on the shelves until I found one that met Dexron 3 spec.
Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 11:57 am
by Barrington
Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 11:57 am
by Barrington
Cheers Ady

Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 1:44 pm
by Alacrity
Northern Bongolow wrote:millermatic ATF DM far exceeds dexron 3. ive used it on 3 motors and its really good stuff, good service/change intervals too.
be carefull not to get millermatic ATF UN, thats dexron 2 equivalent.
take the sump off though, (gasket is reusable if your carefull) and clean the filter out,and blow the oil pipes out to the rad, this way you will get a full oil change.
Good call on the oil, that is what we use here.
The comment about blowing out the oil pipes isn't correct however. Sorry. In doing this all you are doing is removing a little more oil (from the cooler), you still cannot get the oil out of the torque converter so at best you will get about a 2/3rd's oil change at a guess. Changing the oil twice would help if you really wanted to get a total oil change.
Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 2:13 pm
by Barrington
Cheers guys n galls Millers it is then

Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 4:13 pm
by Northern Bongolow
The comment about blowing out the oil pipes isn't correct however. Sorry. In doing this all you are doing is removing a little more oil (from the cooler), you still cannot get the oil out of the torque converter so at best you will get about a 2/3rd's oil change at a guess. Changing the oil twice would help if you really wanted to get a total oil change.
thanks for the info

Re: Best gearbox oil please?
Posted: Thu Feb 17, 2011 10:44 pm
by lazyb5
Hmm sounds like i`ll be changing to millers next time then

Re: Best gearbox oil please?
Posted: Fri Feb 18, 2011 3:27 pm
by bigdaddycain
Alacrity wrote:Northern Bongolow wrote:millermatic ATF DM far exceeds dexron 3. ive used it on 3 motors and its really good stuff, good service/change intervals too.
be carefull not to get millermatic ATF UN, thats dexron 2 equivalent.
take the sump off though, (gasket is reusable if your carefull) and clean the filter out,and blow the oil pipes out to the rad, this way you will get a full oil change.
Good call on the oil, that is what we use here.
The comment about blowing out the oil pipes isn't correct however. Sorry. In doing this all you are doing is removing a little more oil (from the cooler), you still cannot get the oil out of the torque converter so at best you will get about a 2/3rd's oil change at a guess. Changing the oil twice would help if you really wanted to get a total oil change.
That's what i do now... I buy twice the amount of oil needed,use the 1st half as flushing oil.
