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Buyer’s Guide: Preparing Your Car For Colder Temperatures (Especially Your Radiator)

By far the number one question we get this time of year is, “What can I do to prepare my car for winter?” We know other companies run promotions around this, but the purpose of this article isn’t to advertise to you. It’s to help you prepare your car for cooler weather based on the decades of data we have about what goes wrong when temperatures drop.

There are three main things you need to do to winterize your car. These things serve as a very effective insurance policy against breakdowns, overheating and other temperature-related car problems.

  1. Full radiator flush — help clean and prepare your radiator for cold weather. Your radiator is the heart of your car during fall and winter. Because of this, it’s good to remember the old cliché: an ounce of prevention is worth a pound of cure.
  2. Pay attention to your water pump — before temperatures get too ugly, take a step to protect this critical part and prevent the formation of rust and corrosion.
  3. Take a proactive measure against leaks in your radiator. The worst time to find out you have a major leak is on your drive into work on a bitter winter morning, so take a simple step to nip leaks before they start.


We recommend you begin with our Bar’s Leaks Radiator 10 Minute Flush (p/n 1211), which is a simple and very affordable way to ensure your radiator is clean and in top condition. It’s compatible with all automotive cooling systems. It’s safe to use on aluminum and plastic radiators. And it is best used when performing a normal cooling system service, like an antifreeze flush and fill (which is another good idea before the cold weather starts).



1311 PNGBar’s Leaks Cooling System Water Pump Lube with Anti-Rust (p/n 1311). This product protects aluminum, copper, iron and all other parts of the cooling system to help prevent the formation of rust and corrosion. In addition, the water-soluble oil formula lubricates the thermostat and the water pump seal, giving you broad protection against failure. It also lubricates the thermostat, another important (and often overlooked) part of your cooling system.

Not many people think about their water pump as part of a winterization schedule — until it’s too late.


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If you have even the smallest leak in your radiator, now’s the time to squash it. Our Bar’s Leaks Cooling System Repair (p/n 1150) is not only designed to stop any leaks you might have, but also condition and protect your system against future breakdowns. In our experience, for many vehicles this is your last chance before paying an expensive repair bill or replacing the vehicle.



Don’t ignore one of our most popular winter products to help keep your snow plow in top condition: our Bar’s Leaks Jack Oil with Stop Leak (p/n HJ12). Compatible with all snow plow fluids, this formula helps prevent leaks and
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Your plow is a money-maker during the winter months. Don’t find yourself missing billable days because your plow is inoperable. Take one simple, affordable step to make sure your plow is reliable as you need it to be when the snow starts falling.

If you have any questions about any of these products and how to use them, please email our support team or hit us up on Facebook. We’re always happy to help.

Thanks for reading. Hopefully, you and your car enter the colder months knowing you have a few good insurance measures against winter breakdowns in place.


When an Oil Leak Gets Ugly: The Oil-Soaked Starter

One of the symptoms of a oil leak that almost nobody talks about is when oil saturates and damages a starter. This equals a (sometimes expensive) repair, and if left unchecked the leak can go on to cause other issues. Bad news all around. We know. We talk to tech line callers about it frequently.

Typically, when you notice an oil-covered starter, the oil leak is coming from the engine’s rear main seal, which unfortunately is common, especially in older cars. With today’s attention on keeping cars longer, it pays to take care of oil leaks before they rack up repair bills. What starts with a small oil drop on the driveway here and there can quickly escalate into a damaged starter and other problems.

Most haven’t seen what an oil-soaked starter looks like, so we’ve taken some pics in our lab to show exactly how an oil leak can spread and damage the starter:


Not a good problem to have. Rear main seal leaks can start at 60,000 to 80,000 miles. Many people won’t notice a rear main leak for a while as it is gradual. The oil leaks, gets covered with dirt and road grime, then more oil builds up on top of it, which is what this starter picture represents.

It’s a slow process that can one day present problems you never knew you had.

When we talk to customers on our tech lines, we tell them to use Bar’s Leaks Concentrated Rear Main Seal Repair (p/n 1040) for engine oil leaks. The formula is tried-and-true, with over 2.2 million bottles sold across the USA. It seals rear main, cam seal and timing cover leaks, and restores shrunk and hardened seals.


Most importantly, it’s safe and easy to use, even if you don’t know much about engines. In under three minutes, you can have Bar’s Leaks Rear Main Seal installed and working in your engine to stop your oil leak. We engineer our products to be safe and effective, no matter what. Guaranteed.

For more information about Bar’s Leaks Rear Main Seal Repair and how it can help your oil leak, click here. And if you want more technical detail, here is the official Tech Sheet.

Thanks, and if you have any questions, be sure to hit us up on Facebook or call our tech lines at 800–345–6572 (M-F 9am – 5 pm EST).

Bar’s Leaks Block Seal: “Rarely does any product work as intended, but yours absolutely does!”

Richard from Black Canyon City, AZ, just sent us this awesome testimonial about our Bar’s Leaks Liquid Copper Block Seal Intake & Radiator Stop Leak (part 1109). This is what he writes: 1109 PNG

Last year I bought a ’96 Mustang GT, knowing at the time the head gasket was going out soon (180k at the time I bought it and a noticeable “loss” of coolant each week).

As-is, the car ran OK for about 6-months, but I still hadn’t found the time to get the repair done. Last month it overheated twice on my commute to work, so I picked up a bottle of your Liquid Copper and decided to try it (trying to buy a little more time before I had to overhaul the engine). To my surprise (I’ve tried other products on vehicles in the past, each one doing more damage than good) your product immediately smoothed out the idle and eliminated the coolant loss! The leak is between the #2 and #3 cylinders (these fouled out minutes after changing the plugs) and I was losing about 2 gallons a day prior to treating my car with your product!!

You’ve got a customer for life because the product actually worked as suggested! Rarely does any product work as intended, but yours absolutely does! I want to thank you guys for creating such a great product! Because your product has worked beyond my own expectations, I’ve got time to save and prepare for a proper overhaul on my Mustang!

Richard, thanks a million for taking the time to tell us about your experience. The #1 issue we combat every day is to prove our solutions are a cut above everything else out there, because as you write, not all are created equal.

Thanks again, and send a picture of your Mustang along and we’ll get it posted!

Introducing Bar’s Leaks Valve Seal Oil Consumption Repair (p/n VS-1) – The Solution to Stop Oil Burning & Leaking

low oil level

Low oil levels. Chances are, you’ve been there.

It could be because you have a small leak, one that’s hard to pinpoint. Or you could be burning obvious oil – blue exhaust smoke is the dead giveaway. Or, maybe you have the sneakiest problem: you’re burning oil and can hardly tell. Even new cars with modern engines do this, and you only find out when you get your oil changed and you learn you’ve been driving a quart low for weeks.

We’re proud to introduce the best solution for any oil consumption problem: Bar’s Leaks Valve Seal Oil Consumption Repair (p/n VS–1). It’s a professional-grade solution to a problem that affects more cars than you think. The most common cause of valve seal leaks is age and/or high mileage. These seals can also leak due to the vehicle being stored for an extended period of time. Extended storage in particular causes drying and hardening of the seal which leads to shrinking and cracking, and consequently leaking. Using Bar’s Leaks Valve Seal Oil Consumption Repair to reverse aging damage stops oil consumption dead in its tracks.

Bar's Leaks VS-1

So don’t worry about having to spend your money on a costly repair bill. Our professional Valve Seal Oil Consumption Repair quickly and safely restores valve seals so you can get back on the road and back to your life. This product is:

  • Guaranteed to permanently reduce oil consumption
  • Reinforced with synthetic polymers
  • Safe and easy to use, and works quickly
  • Made from a synthetic blend, effective for all engines
  • The ONLY professional-grade oil consumption repair formula on the market

If your car suffers from low oil for any reason, you owe it to yourself to try Bar’s Leaks Valve Seal Oil Consumption Repair. Painstakingly engineered and tested, you can trust that Bar’s Leaks formulas are the fastest, safest way to get your show back on the road — and we’ve been proving that since 1947.

Dealing with a Blown Head Gasket: Choosing the Right Head Gasket Fix

When talking about a blown head gasket, the first question we get asked about our head gasket solutions is, “How do I know which one to choose?”

Good question. We have three main products to address blown head gasket issues: our Bar’s Leaks Head Gasket Repair (p/n 1100), Bar’s Leaks Head Gasket Fix (p/n 1111) and Bar’s Leaks Professional Carbon Fiber Block Seal Head Gasket & Cooling Sealant (p/n HG-1).

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All three are meant to deal with head gasket leaks, but there are differences. I’m going to discuss each product here, starting with our strongest.

Our Professional Carbon Fiber Block Seal Head Gasket & Cooling Sealant (p/n HG-1) is our strongest, most professional-grade product of this type. It’s antifreeze compatible, meaning no flush is necessary unless your system is dirty.  HG-1 contains Xtreme Cool (a water-wetting agent which reduces temperature) as well as carbon fiber and aramid fibers. When dealing with a blown head gasket (or one that’s warped or leaking), consider fibers to be like rebar in concrete: they’re necessary to form a truly permanent bond.

Our Bar’s Leaks Head Gasket Fix (p/n 1111) is one of our most popular products due to cost and how convenient it is to install. Like HG-1, no draining of the cooling system is required unless the system is dirty. For most mild to moderate HG leaks, this product has worked wonders for over 1.3 million customers worldwide.

Our Bar’s Leaks Head Gasket Repair (p/n 1100) is the first blown head gasket product we came out with 11 years ago. It gives a very strong seal and is our most affordable head gasket product, but the installation is more demanding because the product is not compatible with antifreeze. You’ll need to completely flush your cooling system BEFORE using this product, as it can be used with water only.  Immediately after doing the procedure, we ask that you drain your system and let your car sit 12-24 hours (weather permitting – you can’t leave only water in the system if it is below freezing). After the waiting period, you’ll need to flush again, making sure to get all the product completely out of your cooling system.  You can then refill your cooling system with an OE-recommended coolant. You can assume your car will be laid up for a full day (maybe a bit longer) for this installation.

So, here’s how all that boils down:

  • If you want the strongest product we offer AND the most convenient, choose our Carbon Fiber Block Seal Head Gasket & Cooling Sealant (p/n HG-1). It sells for around $45 retail, but is truly a pro-class product. (And still considerably cheaper than a full mechanical head gasket repair, which run $1,500+.)  Recommended if your car can run for 15 minutes without overheating.
  • If you want a strong product AND something that’s very easy to install, choose our Bar’s Leaks Head Gasket Fix (p/n 1111). It’s one of our most popular products overall for a reason. Sells for around $30 retail.  Recommended if your car can run for 20 mintues without overheating.
  • If you want a very strong product AND you have the time and knowledge to do a more manual install, choose our Bar’s Leaks Head Gasket Repair (p/n 1100). Sells for about $10 retail.  Recommended if your car can run for 15 minutes without overheating.

If, after reading this, you still have questions about which product is right for your particular head gasket problem, call our technical support at 800-345-6572 or hit us up on Facebook and ask your question there. We’re here to help!