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10 bestManual Transmission Additiveof December 2025

112M consumers helped this year.

1

Lucas Oil LUC10048 10048 SAE 75W-90 Synthetic Transmission and Differential Lube - 1 Gallon
Lucas Oil LUC10048 10048 SAE 75W-90 Synthetic Transmission and Differential Lube - 1 Gallon

LUCAS

9.8

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2

Red Line (50505) MT-85 Manual Transmission 75W85 GL-4 Gear Oil, 1 Gallon
Red Line (50505) MT-85 Manual Transmission 75W85 GL-4 Gear Oil, 1 Gallon

Red Line

9.6

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9% off

3

8MILELAKE 9L Fluid Evacuator Manual Oil Changer Vacuum Hand Operated Engine Oil Change Fluid Extractor Pump Tool
8MILELAKE 9L Fluid Evacuator Manual Oil Changer Vacuum Hand Operated Engine Oil Change Fluid Extractor Pump Tool

8milelake

9.4

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4

Lucas Oil H/D Oil Stabilizer/12x1/Quart, Multi, One Size (10001)
Lucas Oil H/D Oil Stabilizer/12x1/Quart, Multi, One Size (10001)

Lucas Oil

9.1

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5

Red Line (50204) SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant - 1 Quart (Pack of 2)
Red Line (50204) SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant - 1 Quart (Pack of 2)

Red Line

8.9

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XADO Maximum Transmission pour Boite mécanique - Additif Boite de Vitesse

XADO Maximum Transmission pour Boite mécanique - Additif Boite de Vitesse

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RVS Technology T6A Automatic Transmission Fluid Treatment. For transmissions with an Oil Capacity up to 6 quarts. Safe for All Manual & Automatic transmissions.

RVS Technology T6A Automatic Transmission Fluid Treatment. For transmissions with an Oil Capacity up to 6 quarts. Safe for All Manual & Automatic transmissions.

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Prolong Super Lubricants PSL15000 Transmission Treatment - 8 oz.

Prolong Super Lubricants PSL15000 Transmission Treatment - 8 oz.

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6

Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz
Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz

Bar's Leaks

8.6

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7

Mobil 1 104361 75W-90 Synthetic Gear Lube - 1 Quart
Mobil 1 104361 75W-90 Synthetic Gear Lube - 1 Quart

Mobil

8.3

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8

Lucas 10009 Transmission Fix - 24 oz
Lucas 10009 Transmission Fix - 24 oz

Lucas Oil

8.1

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9

Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant - 1 Quart
Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant - 1 Quart

Red Line

7.8

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15% off

10

Lubegard 60902 Automatic Transmission Fluid Protectant, 10 oz.
Lubegard 60902 Automatic Transmission Fluid Protectant, 10 oz.

Lubegard

7.5

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