The Best Additives and Starting Fluid 2025

1. Super Tech Starting Fluid — 50% Ether, 10.7 oz.

Premium 50% ether blend, more ether than the leading national brand! Keep your engine running smoothly and efficiently with the Super Tech Starting Fluid. This product is intended to help your engine start faster to prevent excess cranking. It's specially formulated with upper-cylinder lubricants, which protect against the dangers of low-quality gasoline. With regular use you can help your engine fend off fuel deposit build-up as well as removing excess water. This product's versatility makes it compatible with both gasoline and diesel type motors.

More ether than the leading national brand Helps engines start faster Prevents excess cranking that can damage starter mechanism For use on both gasoline and diesel engines Keeps your engine running smoothly and efficiently Contains upper-cylinder lubricant to help protect against fuel system deposits and removes water Ideal for lawn mowers, chainsaws, and other small engines

2. Slick 50 Transmission Treatment

Slick 50 41806015 Recharged High Mileage Transmission and Engine Treatment - 15 oz. Slick 50 Recharged High Mileage Transmission Treatment restores lost transmission performance. It helps eliminate the vibrations that are transmitted to the driveline from the faulty clutch-torque relationship. It keeps seals and gaskets soft and pliable to prevent transmission leaks. Recharged High Mileage Transmission Treatment increases viscosity and replenishes the degraded additives.

Can be added anytime or while doing a transmission fluid change, leave adequate fill space Helps erratic shift and loss of torque Prevents Transmission Leaks and aids high mileage transmissions by lubricating seals Restores ATF additive content and provides additional protection to transmissions. Helps eliminate transmission shudder

3. Lucas Oil LUC10131 1 gal Engine Oil Additives, Synthetic Oil Stabilizer

We are dedicated to give everyone the very best houseware products for all home needs, with a focus on dependability, our client satisfaction and great quality. We provide high-quality modern products to be enjoyed by many clients. Engine Oil Additives, Synthetic Oil Stabilizer Features Engine Oil Additives, Synthetic Oil StabilizerSpecifications Capacity: 1 gal Dimension: 12.75 H x 12.75 W x 12.75 L in. Weight: 33 lbs - SKU: ISN54851

Designed for heavy duty truck transmissions Lower operating temperatures Better lubrication Long lasting

4. 1unit No Leak 20601 Transmission Treatment, 16 Oz

Stops hard shifting. Conditions seals. Safe and compatible with all transmission fluids. Bottle.

1unit No Leak 20601 Transmission Treatment, 16 Oz

5. 12PK Gunk® M3911 Liquid Fire® Starting Fluid, 7.5 Oz

Contains upper cylinder lubricant. Starts diesel and gas engines down to –65ºF. This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines. 7.5 oz; Designed for all gasoline engines & diesel engines without glow plugs; Fits injector bracket on most diesel trucks & heavy equipment; Easier starts for gas & diesel engines; Effective to -65°ree; Fahrenheit below zero.;

12PK Gunk® M3911 Liquid Fire® Starting Fluid, 7.5 Oz

6. Sta-Bil 11 Oz. Starting Fluid 22004 Pack of 6 22004 575951

High ether content starts gas and diesel engines fast. Starting fluid with upper cylinder lube and corrosion inhibitor. Safe for oxygen sensors and catalytic converters. For use in cars, trucks, snowmobiles, snow throwers, marine engines, etc. EPA registered. Container Size: 11 Oz. Container Type: Aerosol Engine Type: Gasoline & Diesel pack of 6

Sta-Bil 11 Oz. Starting Fluid 22004 Pack of 6 22004 575951

7. CRC Jump Start® Starting Fluid w/Lubricity - 11oz - #05671

CRC Jump Start® Starting Fluid w/Lubricity - 11oz - #05671 CRC JUMP START STARTING FLUID W/LUBRICITY 11OZ

CRC Jump Start® Starting Fluid w/Lubricity - 11oz - #05671

8. CRC Industries 05671 Jump Start Starting Fluid

CRC Industries 05671 Jump Start Starting Fluid For diesel and gasoline engines. Economical fluid assures fast starts in cold or humid weather. Effective to –65°F. Prolongs battery and starter life. Lubricates upper cylinders to minimize engine wear.

CRC Industries 05671 Jump Start Starting Fluid

9. Oregon 11 oz Tcc Premium Starting Fluid Aerosol Can PSTFLL

Oregon 11 oz Tcc Premium Starting Fluid Aerosol Can

Genuine Oregon Product, Part Number: PSTFLL. Authorized Oregon Dealer. Contains 50% Ether for a fast start on the coldest days

10. Champion 4590K 50 Percent Ether Starting Fluid

You can shop for auto accessories suiting your budget and taste from our exclusive collection that includes top quality products to enhance the style, comfort and functionality of your vehicle. Options for every vehicle. Caters indoor and outdoor styling. Enhances functionality and look. Features High quality construction and durability Variety of styles for every type of accessorySpecifications Country of Origin: USA - SKU: KSAO629288

✅ BRAND: Oregon ✅ MPN: PSTFLL ✅ Type: Starting Fluid