2021 Toyota Highlander — service lifetime transmission fluid or leave it alone?
This started as a small annoyance and I finally decided to track it down. The manual treats the fluid as lifetime under normal conditions, but the vehicle is g…
Transmission
Repairs & Ownership
Need advice: Should I service 'lifetime' transmission fluid?
2024 Acura MDX Type S, about 8,200 miles. Manual says the transmission fluid is lifetime under normal use, but the car is approaching 80k miles and I plan to k…
2017 Nissan Altima — service lifetime transmission fluid or leave it alone?
The manual treats the fluid as lifetime under normal conditions, but the vehicle is getting older and I plan to keep it. What are owners doing in practice, and…
2023 Mercedes-AMG C43 — humming rises with road speed, not engine RPM
This started as a small annoyance and I finally decided to track it down. 2023 Mercedes-AMG C43, about 21,500 miles. There is a low hum that rises with road sp…
2016 Ford Focus — service lifetime transmission fluid or leave it alone?
2016 Ford Focus ST, about 63,000 miles. The manual treats the fluid as lifetime under normal conditions, but the vehicle is getting older and I plan to keep it…
2007 Toyota Camry — humming rises with road speed, not engine RPM
2007 Toyota Camry LE, about 168,500 miles. There is a low hum that rises with road speed regardless of engine RPM. Turning slightly left or right changes the s…
Question: Shudder at light throttle around 40 mph
2018 Ford Mustang GT, about 14,500 miles. I get a light shudder at steady throttle around 35–45 mph. If I accelerate harder or lift off, it goes away. Trying t…
2005 Ford F-250 — service lifetime transmission fluid or leave it alone? — trying to narrow this down
2005 Ford F-250 6.0 Power Stroke, about 229,500 miles. The manual treats the fluid as lifetime under normal conditions, but the vehicle is getting older and I…
2021 Mercedes-Benz GLC — clunk when changing from reverse to drive
2021 Mercedes-Benz GLC 300, about 61,000 miles. There is a single clunk when changing direction at low speed, especially reverse to drive. No vibration while c…
Question: Shudder at light throttle around 40 mph
I get a light shudder at steady throttle around 35–45 mph. If I accelerate harder or lift off, it goes away. Trying to figure out whether this sounds more like…
TowTravelerCommunity StarterJul 19, 20261968 Ford Mustang FastbackBoston / New England4 replies0 helpful
2017 Jeep Grand Cherokee — humming rises with road speed, not engine RPM
2017 Jeep Grand Cherokee Limited, about 147,500 miles. There is a low hum that rises with road speed regardless of engine RPM. Turning slightly left or right c…
2022 Volvo XC90 — humming rises with road speed, not engine RPM — Miami owner
There is a low hum that rises with road speed regardless of engine RPM. Turning slightly left or right changes the sound. Is that enough to suspect a wheel bea…
2023 Audi S5 Sportback — delayed engagement into Drive when cold
2023 Audi S5 Sportback, about 8,200 miles. On cold mornings, shifting from Park to Drive takes a second or two before the car actually engages. Once warm it's…
2021 Chevrolet Silverado 1500 LTZ 6.2 — silverado light-throttle shudder: engine or transmission?
At steady speed with light throttle I get a vibration that feels almost like driving over fine rumble strips. It disappears if I accelerate. What's the cleanes…
EuroNomad49Community StarterJul 15, 20262021 Chevrolet Silverado 1500 LTZ 6.2Boston / New England14 replies0 helpful
2021 Chevrolet Silverado 1500 LTZ 6.2 — anyone else: Silverado light-throttle shudder: engine or transmission?
At steady speed with light throttle I get a vibration that feels almost like driving over fine rumble strips. It disappears if I accelerate. What's the cleanes…
QuattroMom77Community StarterMar 4, 20262021 Chevrolet Silverado 1500 LTZ 6.2Detroit0 replies0 helpful
2023 Acura Integra — humming rises with road speed, not engine RPM
2023 Acura Integra A-Spec, about 11,000 miles. There is a low hum that rises with road speed regardless of engine RPM. Turning slightly left or right changes t…
2019 Lexus GS — light-throttle shudder around 35–45 mph
2019 Lexus GS 350, about 13,000 miles. There is a rumble-strip-like shudder at steady light throttle in a narrow speed range. Harder acceleration or lifting of…
Need advice: Should I service 'lifetime' transmission fluid?
2025 Lexus NX 350h, about 4,800 miles. Manual says the transmission fluid is lifetime under normal use, but the car is approaching 80k miles and I plan to keep…
Silverado light-throttle shudder: engine or transmission?
2021 Chevrolet Silverado 1500 LTZ 6.2, about 78,000 miles. At steady speed with light throttle I get a vibration that feels almost like driving over fine rumbl…
BoostedDetailerCommunity StarterJul 4, 20262021 Chevrolet Silverado 1500 LTZ 6.2DMV / Maryland5 replies0 helpful
2021 Chevrolet Silverado 1500 — light-throttle shudder around 35–45 mph
There is a rumble-strip-like shudder at steady light throttle in a narrow speed range. Harder acceleration or lifting off makes it disappear. How would you sep…