Fresh vs boutique atf

[Infomercial]

I drained a GM 6T70 a few months ago and filled with redline d6.

I later siphoned out a quart and a half to add royal purple max atf and lubeguard red.

This leaves me with under 4qt of previous fluid that was dark but smelled fine.

I recently got a cheap case of lucas low viscosity atf that meets specs

Would i be doing any good draining most of the mostly type iv to replace with type iii? I would be getting rid of more old fluid as well.

 

[Slick3914]

I would use a quality fluid and stick with it instead of changing brands

 

[clinebarger]

Just run Dexron VI & change it often.

 

[ctechbob]

First car was an 83 Camaro (bought in 1992) that got Castrol Syntec 5W-50. The 5.slow ran just fine on it.

In 1997 I bought a brand new Isuzu Rodeo with the 3.2 V6 that I ran Mobil1 10W30 in until it developed the common HLA tick and Isuzu issued a tech bulletin to specifically run Mobil1 0W30 in it.

I remember that 0W number really scaring me at the time, but it really did cure the HLA's.

 

[Infomercial]

Just run Dexron VI & change it often.

But that is a lower quality base oil. Redline is better in that way. Is there any evidence real dex does anything better?

 

[clinebarger]

Is there any real evidence Redline or any other boutique ATF will prolong the life of a transmission.

 

[kschachn]

Is there any real evidence Redline or any other boutique ATF will prolong the life of a transmission.

Apparently only in infomercials.

 

[ltslimjim]

Is there any real evidence Redline or any other boutique ATF will prolong the life of a transmission.

I’ve experienced improved shifting and solved a common transmission case whine after swapping to Amsoil SS ATF (ATL). Nearly 200k on this fluid, 345k total miles on transmission. So, at a minimum I believe the case wear is probably lower and the shifting is smooth. DW-1 wasn’t the best fluid in my case. .02 YMMV

 

[clinebarger]

I’ve experienced improved shifting and solved a common transmission case whine after swapping to Amsoil SS ATF (ATL). Nearly 200k on this fluid, 345k total miles on transmission. So, at a minimum I believe the case wear is probably lower and the shifting is smooth. DW-1 wasn’t the best fluid in my case. .02 YMMV

Still anecdotal, No magic ATF exists....Synthetics allow longer drain intervals, A GM 6T70 would benefit more from frequent fluid changes.

 

[JeffKeryk]

I’ve experienced improved shifting and solved a common transmission case whine after swapping to Amsoil SS ATF (ATL). Nearly 200k on this fluid, 345k total miles on transmission. So, at a minimum I believe the case wear is probably lower and the shifting is smooth. DW-1 wasn’t the best fluid in my case. .02 YMMV

I've experienced improved shifting by servicing the transmission. Manuals, traditional gear automatics and CVTs. I do use quality fluids, but not the boutique stuff. I just don't believe in them.

 

[Mainia]

I've experienced improved shifting by servicing the transmission. Manuals, traditional gear automatics and CVTs. I do use quality fluids, but not the boutique stuff. I just don't believe in them.

So no advantage of all the HPL I just put in my car, with the exception of engine oil?

GL4 to now GL4/GL5 for my dry dual clutch trans with front diff in same cavity, transfer case, and rear diff. So I could of use just Hyundai branded oil in my car that gets highly trashed daily? I suppose, just clean oil is good oil.

 

[JeffKeryk]

So no advantage of all the HPL I just put in my car, with the exception of engine oil?

GL4 to now GL4/GL5 for my dry dual clutch trans with front diff in same cavity, transfer case, and rear diff? So I could of use just Hyundai branded oil in my car that gets highly trashed daily?

Whatever floats your boat.

 

[Mainia]

I get your point, I was adding a comment while you were posting. Changing it so it is on the cleaner side is a bigger deal I would say as long as it is quality oil.

 

[ltslimjim]

Still anecdotal, No magic ATF exists....Synthetics allow longer drain intervals, A GM 6T70 would benefit more from frequent fluid changes.

Many people use Amsoil or boutique or alternative ATFs from OE with superb results. Contrary to magical, there have existed poor OE fluids and poor design in the history of transmissions; which lie at the feet of manufacturers. Sometimes, the difference in fluid means a long, trouble-free service life and outright failure. Amsoil and Valvoline MaxLife are specific use cases from early 2000s Honda Odysseys, that the fluid was the difference in a failed transmission or one that lasted a long time; despite some design problems the fluid difference did matter; and of course regular maintenance to your point. Hardly anecdotal when one of hundreds and likely thousands of use cases.

It can be the difference, going away from often “good enough” OE, but likely won’t cause problems as many claim. Poorly designed and/or poorly maintained is usually the failure root. Do we know if OE vs alternative yield longer service life for all? Who knows. But yes, I’ve had success doubling Honda DW-1’s 30k interval…60k and still close to unused fluid appearance/smell. Less down time. I don’t see any negatives going boutique; unless there are specific cases of sticking to OE.