Redline D4 versus MTL in the TR6060

[2014CamaroSSRS]

No I don't... And my tranny temp doesn't get higher than 180...

[Camarotobeornottobe]

Originally Posted by 2014CamaroSSRS

No I don't... And my tranny temp doesn't get higher than 180...

Really has been zero negatives experienced so far. But, none of us drive during the winter either. Will you be driving year-round in CT?

[2014CamaroSSRS]

nope.. she sits in the garage in the winter.. I don't drive it in rain either haha.. no rain, no winter driving.. and don't take it out if it's lower than 40-45*F out either - the tires don't like those cold temps hahaha...

I have an AWD CTS for my bad-weather driving...

[Camaro Dude]

Originally Posted by Camarotobeornottobe

I'm still rocking the 50/50 split of MTL and D4. Feels right when hot.My 1-2 and 3-2 shifts can be a little stiff when first pulling out of the garage (when fluid cold). But, I suspect this is the nature of the tranny, not an indicator of the fluid being a thicker (i.e. it would be that way even if straight D4). Never a grind, just a little stiffer (and clunkier, maybe?) when engaging the gear shifter into the 2nd position than after a minute of driving.This everyone else's experience?

Nope, can't say that I have experienced this, re the 2nd position feeling "stiffer" when cold, but then again, I allow the car to idle for 2 min, and when I do drive off, I'm in total granny mode for the first 5 min, and I mean TOTAL, so perhaps I've never really tested your question out.

Only once I hit the 100c oil temp mark, is it time to it up a notch.

[nxttruck2002]

Just did 2q of MTL and 2q D4 and WOW!!! so much smoother and no trans noise.

I will report back later.

[Camarotobeornottobe]

Funny how much crap I got from some folks when I first started researching the possibility of using MTL of some mixture . . . at the beginning of this thread. So far, no one has experienced anything negative . . .

[Kendall421]

Originally Posted by Camarotobeornottobe

Funny how much crap I got from some folks when I first started researching the possibility of using MTL of some mixture . . . at the beginning of this thread. So far, no one has experienced anything negative . . .

Sold me on the idea! I was going straight D4...now planning 50/50 with MTL!

[nilfinite]

When I pull the 1LE out of the garage in 50 degree weather, I have to drive up and down a couple of steep hills when the car is still cold.

Shifting into 1st and sometimes 2nd requires a ridiculous amount of effort that I'm worried about breaking something. I believe it's usually worse when the car is tilted forward. This is with the stock fill.

Guessing with all of that in mind, I should probably get 100% D4 right?

[Camarotobeornottobe]

Yea, I would go D4 at 100% to see if that helps .... especially if you experience no other problems with the tranny after those initial shifts.

If D4 completely fixes your issue (I have doubts, but am hopeful for you), you could always double back with the MTL.


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[Camaro Dude]

Originally Posted by nilfinite

When I pull the 1LE out of the garage in 50 degree weather, I have to drive up and down a couple of steep hills when the car is still cold.

Shifting into 1st and sometimes 2nd requires a ridiculous amount of effort that I'm worried about breaking something. I believe it's usually worse when the car is tilted forward. This is with the stock fill.

Guessing with all of that in mind, I should probably get 100% D4 right?

Get it checked at the dealer first...

If it clears, then move on to camarotobeornottobe's advice.

Personally, I feel that 100% D4 will fix your issue, but in any case, have it checked, make use of your warranty while it's there ; ).

[wakespeak]

Originally Posted by Camaro Dude

Get it checked at the dealer first...

If it clears, then move on to camarotobeornottobe's advice.

Personally, I feel that 100% D4 will fix your issue, but in any case, have it checked, make use of your warranty while it's there ; ).

I shift 1-3 when cold as I have a slight downhill just after the house. The transmission seems to shift better into 2nd after about 5 minutes of driving.

[Camaro Dude]

Originally Posted by wakespeak

I shift 1-3 when cold as I have a slight downhill just after the house. The transmission seems to shift better into 2nd after about 5 minutes of driving.

Makes total sense to me!

Originally Posted by Camarotobeornottobe

Thanks for the reply. Your impressions when the tranny is cold, reference engagement, force needed, etc?

I just scrolled up, and realized I never updated with my final drive of the year, in the month of November...

Quick recap, 3 quarts MTL, 1 Quart D4.

Long story short, I will be readjusting to 2 quarts MTL, 2 quarts D4, because the shifter suddenly started feeling way too stiff for me, the first 5 minutes of driving off, after a 2 min cold idle start, on those colder November days.

In retrospect;

I do not recommend my proportions of MTL and D4 used, 3-1, for what is to be classified as a Spring/Summer/Fall only season "Daily Driver". For winter cars, I'll dare say, I Do Not Recommend MTL period in any form period!

Conclusion. Adjust proportions of MTL and D4 used, according to climate, and driving style and conditions.

4 quarts of MTL would be sweet on a track, and 4 quarts of D4 would be a sure sweet upgrade on any Daily Driver, 4 season, stock/modified car.

Anything in between, use your own judgement.

In my case, driving style, how the car is used, and climate conditions, the 3-1 ratio, was too thick at the end of the day.

[Camarotobeornottobe]

Originally Posted by Camaro Dude

Makes total sense to me!



I just scrolled up, and realized I never updated with my final drive of the year, in the month of November...

Quick recap, 3 quarts MTL, 1 Quart D4.

Long story short, I will be readjusting to 2 quarts MTL, 2 quarts D4, because the shifter suddenly started feeling way too stiff for me, the first 5 minutes of driving off, after a 2 min cold idle start, on those colder November days.

In retrospect;

I do not recommend my proportions of MTL and D4 used, 3-1, for what is to be classified as a Spring/Summer/Fall only season "Daily Driver". For winter cars, I'll dare say, I Do Not Recommend MTL period in any form period!

Conclusion. Adjust proportions of MTL and D4 used, according to climate, and driving style and conditions.

4 quarts of MTL would be sweet on a track, and 4 quarts of D4 would be a sure sweet upgrade on any Daily Driver, 4 season, stock/modified car.

Anything in between, use your own judgement.

In my case, driving style, how the car is used, and climate conditions, the 3-1 ratio, was too thick at the end of the day.

Dude, thanks for the feedback. I would have thought more MTL would cause some stiffness in the cold, but your results surprise me a little. Back when I was in the research phase, one member who used 100% MTL told me he noticed no difference when cold -- but had obviously better results when warm. In retrospect, he might have been drawing a distinction between fluid temp with warm weather, as oppposed to a distinction in ambient temps.

As stated, for my non-tracked, stored-in-the-winter 1LE, the 50/50 mix has been great. I thought about pushing it to 3/1, but will probably hold off now.

[Camaro Dude]

I was surprised too.

It just didn't feel good anymore. I had lost they nice clicky feeling in my hand when it would fall into gear. When bone cold(November), it even felt like I added more honey in there. Even after warmed up, whilst the honey feeling would go away(obviously), total effort was increased to engage 1st-2nd, and something just didn't "feel right" to me. This caused the alarm bells in my head go ding ding, lol.

Keep in mind, in my BMW, I was using MTL, and I ended up curing the dreaded "Getrag Rattle" by using MT-90.

There is indeed an incremental ladder to the thickness going from D3<MTL<MT-90, that one truly feels. There is zero doubt about that.