The 6 Best Manual Gearbox Treatments (2022 reviews)

manual gearbox treatments
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Are you planning to buy manual gearbox treatments, and are you confused about the options ? This page is just for you.

Our review process:

Our Top Picks:

Best Overall:
Buy: Prolong Super Lubricants Manual Gearbox Treatment
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Best For Steering Gears:
Buy: Liqui Moly Manual Gearbox Treatment
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Best For High Performance:
Buy: Hot Shots Secret Manual Gearbox Treatment
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Best For Power Steering:
Buy: Xado Manual Gearbox Treatment
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Best For Loss Of Torque:
Buy: Slick 50 Manual Gearbox Treatment
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Best For Whining:
Buy: Bars Leaks Manual Gearbox Treatment
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Best Overall: Prolong Super Lubricants Manual Gearbox Treatment

Prolong Super Lubricants Manual Gearbox Treatment
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Here, we review a treatment that manages to win our hearts. It's the Prolong Super Lubricants Manual Gearbox Treatment and it's widely considered as one of the all-around great treatments you can buy. The prolong super lubricants manual gearbox treatment is compatible with Mercon v and it is unbeatable. Make sure this fits by entering your model number. In addition, it includes a formula with anti-friction metal treatment technology.

The treatment features a formula that promotes smoother manual shifts and helps restore responsiveness in automatic transmissions. Finally, the prolong super lubricants manual gearbox treatment is great with smooth shifts and it added a bottle.

Almost all buyers quickly discovered that the treatment is one of the most common fluids on the market. And, a few say that the treatment provides different friction characteristics than dexron iii/mercon. Furthermore, a few also found that this stuff is like a magic transmission treatment. Overall, most customers call the treatment suits best, and no one questions it.

Top Customer Quotes:
  • This is no hype at all, it is true.
  • This is designed to be used instead of changing transmission fluid.
  • This does work to improve transmission shifting.
  • This does shift noticeably smoother.

Best For Steering Gears: Liqui Moly Manual Gearbox Treatment

Liqui Moly Manual Gearbox Treatment
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The Liqui Moly Manual Gearbox Treatment should be able to handle its purpose and duties with ease. The liqui moly manual gearbox treatment has 215k miles and it makes a huge difference. Make sure this fits by entering your model number. In addition, the treatment reduces the noise, runs like new and it makes for smooth movement.

Above all, the liqui moly manual gearbox treatment is much better and it has improved steering characteristic.s.

Almost all buyers found that the treatment looks like this one is no exception. Also, a few say that the treatment is designed to perform better over a longer period of time. To sum up, most customers call the treatment suits best, and no one questions it.

Top Customer Quotes:
  • This is liquimoly ... German quality it does work as expected perfectly.
  • This works with (red) atf iii.
  • This is a good brand of high - mileage fluid.
  • Damps down shifting operations and protects from wear.

Best For High Performance: Hot Shots Secret Manual Gearbox Treatment

Hot Shots Secret Manual Gearbox Treatment
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The Hot Shots Secret Manual Gearbox Treatment is capable of outshining several other treatments featured in this list in overall features for the price point. The hot shots secret manual gearbox treatment is designed for smoother shifts, is easy and it allows for excessive noise. Make sure this fits by entering your model number. And, it was in traffic and I added a bottle.

Above all, the hot shots secret manualgearbox treatment reduces transmission operating temperatures with high performance ester formula.

Almost all customers opine that the treatment will greatly enhance any atf fluid. Also, they strongly agree that the treatment will work overtime to clean them and reduce sticking. In short, for almost all buyers, the treatment was what they were looking for.

Top Customer Quotes:
  • This is absolutely worth a try for these symptoms.
  • This will help the transmission shift smoothly without feeling it shift.
  • This will not restore worn clutch material.
  • This makes a huge difference and it reduces friction.

Best For Power Steering: Xado Manual Gearbox Treatment

Xado Manual Gearbox Treatment
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The Xado Manual Gearbox Treatment's high-end materials makes sure that it ages well with use. The xado manual gearboxtreatment is designed for smoother shifts and it reduces noise. Make sure this fits by entering your model number. The best part about ex120 is one treatment lasts for 62, 000 miles.

The treatment is easy and it works like a miracle. Also, the treatment works with a manual, is great with smooth shifts and it is suitable for low speeds. Most importantly, the xado manualgearbox treatment improves operation of synchronizers, additionally protects worn metal in manual transmissions.

Almost all customers quickly discovered that the treatment takes a good amount of mileage for true results. And, they say that the treatment is like a chain reaction that leads to problems showing up. Moreover, they strongly agree that the treatment is not broken but simply worn. Overall, for almost all customers, Xado product was what they were looking for.

Top Customer Quotes:
  • This is at room temperature, so the contents flow freely.
  • Repairs scratches and damaged working surfaces - improves operation of synchronizers.
  • Increases gear contact efficiency - resulting in better gear shifting accuracy.
  • This can work with any hydraulic equipment in any unit.

Best For Loss Of Torque: Slick 50 Manual Gearbox Treatment

Slick 50 Manual Gearbox Treatment
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Next on the list, we've got yet another treatment that manages to win our hearts. It's the Slick 50 Manual Gearbox Treatment and it's widely considered as one of the most convenient treatments you can buy. The slick 50 manual gearbox treatment provides additional protection to transmissions. Make sure this fits by entering your model number. Moreover, the treatment can cause loss of torque and it makes for a much quieter. Most importantly, the slick 50 manual gearboxtreatment can be added anytime or while doing a transmission fluid change, leaving adequate fill space.

Almost all buyers opine that the treatment is like gold in a bottle. Further, a few say that the model has a fresh v8 engine, a 318, but the old automatic transmission. Moreover, a few strongly agree that the treatment does not specifically say not to use it in synthetic transmission fluid, it will probably work. In conclusion, the tone of buyers is very positive and we believe that the treatment suits the purpose.

Top Customer Quotes:
  • This is used to clunk, shift erratic, and make tons of noise on the road.
  • This is really treating the transmission surfaces and not the fluid.
  • This is a good thing for a transmission.
  • This is designed for use in the latter, not the former.

Best For Whining: Bars Leaks Manual Gearbox Treatment

Bars Leaks Manual Gearbox Treatment
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The Bars Leaks Manual Gearbox Treatment might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. The bars leak. Manual gearbox treatment is for extreme pressure, stops the leak and it is much more. If you are dealing with a leak, or a generally noisy gearbox, this bar’s leaks gear repair is a good fit for your application. This product works in all manual gearboxes, differentials, open & posi axles and more.

Above all, the bars leak. Manual gearbox treatment restores older and high - mileage gear performance.

Almost all customers quickly discovered that the treatment can be added to top-off existing low fluid level, or when changing oil. Furthermore, a few also found that the treatment can be used on a ford 9” rear end to help seal and quiet it. Moreover, a few say that the treatment restores older and high - mileage gear performance. In short, buyers found this to be one of the best treatments for daily purposes.

Top Customer Quotes:
  • You asked for a heavy-duty professional grade gear repair formula, and you got it.
  • This allows products to flow even at very low temps.
  • The fluid starts running out of the hole, it is full.
  • Seal conditioner – stops currents and prevents future leaks by protecting and reconditioning seals.