Easy to contact. Easy to purchase. Pick up or delivery available. We chose pick up as wanted the item quickly. Staff at shop when picking up were very friendly and helpful. Item is fantastic ( broke discs). Thank you. Will shop again if looking for car parts.
Radiator & Engine Block Stop Leak 500mL - Nulon
Delivery & Shipping
Delivery & Shipping
At Universal Auto Spares, we are committed to getting your auto parts to you quickly and efficiently. Our streamlined shipping process kicks into gear the moment your order is placed. Shipping costs are conveniently calculated at checkout, ensuring transparency and no hidden fees.
Download Tax Invoice
Download Tax Invoice
Download a business tax invoice instantly after your purchase in just a few clicks. Whether you're buying for your business, accounting records, or tax purposes, you can easily access and download your invoice whenever you need it. Fast, simple, and available immediately after checkout.
Returns & Warranty
Returns & Warranty
At Universal Auto Spares, your satisfaction is our top priority. We understand that sometimes an item may not be what you expected, or you may change your mind. That's why we've made our returns process as straightforward and hassle-free as possible. If you need to return an item, you can do so within 30 days of your purchase.
Radiator & Engine Block Stop Leak 500ml - Nulon
Nulon Radiator & Engine Block Stop Leak with DuPont? Kevlar® fibre & liquid resin provides the ultimate strong long lasting fix. Formulated to permanently seal radiator leaks, inlet manifolds and engine block leaks, cracks, leaking welch plugs and leaking gaskets without costly mechanical repair. This unique microfibre technology seeks out and plugs small leaks and cracks that cause coolant loss, loss of pressure and overheating.
The DuPont? Kevlar® fibres mesh and plug the leak or crack which are then encased in a hardened liquid glass resin for the ultimate permanent water tight seal.
Nulon Radiator & Engine Block Stop Leak can be safely used in cars, trucks, vans, utes, and light commercial vehicles. Safe for all plastic, aluminium and metal (copper / steel) radiators, heater cores, gaskets and welch plugs. Safe to use with all types and colour of glycol anti-freeze/anti-boil and water based coolants.
- Seals radiator and inlet manifold leaks and cracks, welch plugs and leaking gaskets and pipe leaks fast
- Contains DuPont™ Kevlar® fibre and liquid glass resin for the ultimate permanent water tight seal
- Stops leaks from small pinholes (up to 0.8mm diameter) and small cracks (up to 0.8mm width) in any cooling system
- Saves costly mechanical repairs
- Maintains cooling system pressure and temperature to prevent overheating
- Safe to use with all types of glycol anti-freeze/anti-boil coolants and water based corrosion inhibitors
This product is designed to be added to the coolant – DO NOT ADD TO ENGINE OIL.
If your coolant is dirty flush the coolant and replace with the correct recommended coolant, before adding this product.
DANGER: Ensure the radiator is cool before opening the radiator cap to prevent scalding.
Make sure when adding Radiator & Engine Block Stop Leak, radiator fluid is above internal radiator core.
- Shake bottle contents and pour Radiator & Engine Block Stop made with DuPont™ Kevlar® fibre directly into the radiator. If using in a small capacity radiator (4 cyl) use half a bottle to prevent overflow.
- Fill radiator and overflow tank to correct level and replace radiator cap.
- Start the engine and turn the heater to hot and fans to high to circulate coolant.
- Leave vehicle to idle for 15 minutes.
- Turn engine off and allow engine to cool.
- Check coolant level and top-up if needed. Drive the vehicle as normal.
HOW MUCH TO USE
- 4 cylinder engines smaller than 5 litres radiator capacity use half a bottle.
- 6 and 8 cylinder engines up to 15 litres radiator capacity use one bottle.
- For larger cooling systems use half bottle per 7.5 litres of radiator capacity.
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