Royal Purple-ROY01512 ROYAL PURPLE SYNCHROMAX QT. TRANSFLUID
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10,464 reviews
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Transmission Fluids
Experiential insights by users
About Royal Purple-ROY01512 ROYAL PURPLE SYNCHROMAX QT. TRANSFLUID
Overall Feedback:
87% positive
91% praised its long-lasting durability, while 9% experienced degradation after a short period
The product made my transmission so smooth and quiet that it feels like a new car.
Shifting and movement are still fine, but it's not as smooth as it was with the prior fluid.
93% found it easy to pour and install
The original BMW fluid works best due to its higher coefficient of friction, allowing the synchros to match gear speed quicker.
85% praised for its excellent performance, while 15% experienced slipping and hesitation
Since using this product, shifting gears has never been smoother and fuel economy has improved.
After using this transmission fluid, my car is quieter and shifts are smooth and crisp, and the cold notchiness has been removed.
I compared the performance of different transmission fluids in my 2001 BMW 325xi with approximately 130k miles on it. With the original BMW fluid, I did not notice any rough shifts from 1st to 2nd. With the Redline D4 ATF rough shifting was more pronounced. With The Royal Purple Synchromax, it is just barely there.
