Did my mechanic put wrong trans fluid? AMG GTS
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2018 AMG GTS
Did my mechanic put wrong trans fluid? AMG GTS
2018 AMG GTS - Trans Overheat, Went Into Neutral, Wrong Fluid?
Desperately looking for some advice from AMG GTS experts here.
A few weeks ago my 2018 AMG GTS threw a Transmission Oil Overheating warning and then went into Neutral while I was parking. I also got a red "Stop Vehicle - Transmission Malfunction" message.
I shut the car off, let it cool down, and everything went back to normal.
My mechanic inspected the transmission fluid for signs of internal damage by draining about 2 quarts and checking for metal shavings. He said the fluid looked clean with no significant metal present. He then added approximately 2 quarts of Pentosin FFL-4 back into the transmission.
About a week later, the overheating warning came back. This time the transmission temp reached 257°F. I slowed down, let it cool, and the warning disappeared again. Since then I've driven the car normally, including some heavy Sport+ driving, without immediately reproducing the issue.
Now I'm planning a transmission fluid flush, and going to the dealer for this, but I'm concerned about the fluid that was added during the inspection.
The mechanic used:
My questions:
Also if im posting in the wrong place let me know where is the correct thread. Long time lurker around here but rarely posted.
Desperately looking for some advice from AMG GTS experts here.
A few weeks ago my 2018 AMG GTS threw a Transmission Oil Overheating warning and then went into Neutral while I was parking. I also got a red "Stop Vehicle - Transmission Malfunction" message.
I shut the car off, let it cool down, and everything went back to normal.
My mechanic inspected the transmission fluid for signs of internal damage by draining about 2 quarts and checking for metal shavings. He said the fluid looked clean with no significant metal present. He then added approximately 2 quarts of Pentosin FFL-4 back into the transmission.
About a week later, the overheating warning came back. This time the transmission temp reached 257°F. I slowed down, let it cool, and the warning disappeared again. Since then I've driven the car normally, including some heavy Sport+ driving, without immediately reproducing the issue.
Now I'm planning a transmission fluid flush, and going to the dealer for this, but I'm concerned about the fluid that was added during the inspection.
The mechanic used:
- Pentosin FFL-4 transmission fluid
- Motul Gear 300 75W-90 gear oil
My questions:
- Is draining 2 quarts to inspect for metal a normal diagnostic procedure and then adding 2 quarts back in?
- Would transmission damage typically show up in that amount of fluid?
- Most importantly, HAS HE DAMAGED the transaxle by using Pentosin FFL-4 and Motul Gear 300 75W-90 gear oil
Also if im posting in the wrong place let me know where is the correct thread. Long time lurker around here but rarely posted.
Last edited by KrisMB7; Yesterday at 07:33 PM.
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Fast and Really Fast Sports Cars
Did your tech follow the instructions to fill the DCT fluid? There are quite a few steps.
I used Motul 300 75W-90 as gear oil and have done a few track days. All good.
That said Pentosin FFL-4 seems to refernce MB part number 001 989 86 03, which is MB 236.25
https://operatingfluids.mercedes-ben...heet/236.25/en
https://crpautomotive.com/wp-content...Fluid-FFL4.pdf
I used Motul 300 75W-90 as gear oil and have done a few track days. All good.
That said Pentosin FFL-4 seems to refernce MB part number 001 989 86 03, which is MB 236.25
https://operatingfluids.mercedes-ben...heet/236.25/en
https://crpautomotive.com/wp-content...Fluid-FFL4.pdf
