I’m needing a stop leak for a manual Subaru Impreza, will this work?

Hi, Jennifer. Thank you for your question, and for considering Bar's Leaks to help with a transmission leak in your Subaru Impreza. We appreciate the opportunity to help you. The product you are asking about - Bar's Leaks Automatic Transmission Repair (part number 1400) was designed for use in automatic transmissions, so we would not recommend you use it in your Impreza. For a vehicle with a manual transmission, we recommend our Bar's Leaks Transmission Stop Leak Concentrate (part number 1420). This product was designed to work with all domestic and import vehicles, with either automatic or manual transmissions. For a manual transmission, you would use approximately 2 ounces of stop leak per 1 quart of transmission fluid capacity. Leaks usually stop in 200 miles or 3 days of driving, but if the leak continues, a second application or mechanical attention may be needed. If we can be of any further assistance, please feel free to call our Technical Support Team at 1-800-345-6572. We are available to help you Monday through Friday, from 8 am to 5 pm, EST.

would this help the whine with a slight slip?

Yes, this product will help with those issues. This formula reduces rough shifting and friction, while eliminating slip, controlling temperature, and repairing shudder, chatter and whining. And how exactly does it do this? It reduces friction enough to prevent wear. It also helps control the temperature, while at the same time allowing some friction to prevent the internal clutch material from slipping. Hundreds of thousands of bottles sold nationally. One bottle of Bar’s Leaks Transmission Repair, 16.9 oz. part number 1400, treats 8 to 12 quarts of transmission fluid. On smaller systems from 4 to 7.9 quarts, only use half bottle, pouring equal amounts from each side. For larger systems use one bottle for every 10 quarts of capacity. If you have any other technical questions, feel free to contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website.

Dose this work with Type F transmission fluid?

Yes, Bar’s Leaks Transmission Repair is formulated to work in all types of transmission fluid. Use in regular automatic transmissions. Do not use in CVT transmissions. If you have any other technical questions, feel free to contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website.

can i use in transmission without any problem?

Thank you for your question, and for considering Bar's Leaks Automatic Transmission Repair to help with your automotive needs. This product can be used in most vehicles with an automatic transmission. It is not recommended for use in vehicles with a CVT, or Continuously Variable Transmission. When used, it will help reduce rough shifting and friction, while eliminating slip, controlling temperature, and repairing chatter, shudder, and whining. You can use it to top off when your transmission fluid is low, or add a bottle when you are changing the fluid. Depending on the transmission issue your vehicle is experiencing, you will normally see results within two (2) days or 100 miles of driving. If you have any other questions, or need additional information, please feel free to contact our Technical Support team at 1-800-345-6572. We are available to assist you Monday through Friday, from 8 am to 5 pm, EST.

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⚙️ Drive smooth, leak-free, and worry less with Bar’s Leaks Transmission Repair!

HEAT TAMER - Controls transmission temperature to prevent costly overheating damage.
SMOOTH OPERATOR - Eliminates rough shifting, chatter, and whining for a silky drive every time.
HIGH MILEAGE HERO - Premium formula designed to restore and maintain peak transmission performance.
LEAK PROOF CONFIDENCE - Seals transmission leaks to keep your ride flawless and worry-free.
UNIVERSAL COMPATIBILITY - Works seamlessly with all transmission fluids (except CVT) for easy maintenance.

Bar’s Leaks 1400 Transmission Repair is a 16 oz. premium liquid formula infused with molybdenum disulfide that stops leaks, reduces friction and heat, and restores smooth shifting in automatic transmissions. Ideal for high mileage vehicles, it stabilizes fluid and prevents costly repairs by repairing shudder, chatter, and slipping. Compatible with all transmission fluids except CVT, it’s a must-have for proactive transmission maintenance.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Material	Molybdenum Disulfide
Brand	Bar's Leaks
Package Information	Bottle
Liquid Volume	16.9 Fluid Ounces
Item Weight	490 g
Recommended Uses For Product	Automotive
Specific Uses For Product	Transmission Maintenance, Preventing Leaks, Improving Transmission Performance
Item Form	Liquid
Global Trade Identification Number	00046087014004
Manufacturer	Bar's Leaks
Net Quantity	473.18 millilitre
UPC	046087014004
Number of Items	1
Model	Transmission Repair
Product Dimensions	21.34 x 9.14 x 4.57 cm; 489.88 g
Item model number	1400
Manufacturer Part Number	1400
Assembly Required	No

Bar's Leaks 1400 Transmission Repair - 16 oz.

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