HomeEngine Leak Sealers Top 10 Best Engine Leak Sealers #1 Bar’s Leaks Block Seal Head Gasket Fix (Pack of 10 SCORE View Detail Buy it on Amazon ✔[amz_corss_sell asin="B00BYS6T66"]✔Seals cracked cylinder heads and blocks✔Stops block leaks More Detail+ #2 Bar’s Leaks 1109-6PK Liquid Copper ‘Block Seal 9.7 SCORE View Detail Buy it on Amazon ✔Repairs blocks✔Repairs freeze plug leaks✔Seals larger leak seal More Detail+ #3 Lucas Oil Products LUC10278 Engine Oil Stop Leak, 1 Quart, 1 Pack 9.4 SCORE View Detail Buy it on Amazon ✔Country Of Origin: United States✔Package Dimensions: 8.89 L X 10.16 W X 30.48 H (Centimeters) More Detail+ #4 - 39% Deal K-Seal ST3501 Pour and Go Permanent Head Gasket and Block 9.2 SCORE View Detail Buy it on Amazon ✔Scientifically Tested - K-Seal is the only product to have been successfully tested by the equipment at Brighton University and classes as meeting the demands of ASTM D3147✔Fixes blown head gaskets, cracked heads and blocks More Detail+ #5 Bar’s Leaks 1109 Block Seal Liquid Copper Intake and 9.0 SCORE View Detail Buy it on Amazon ✔Repairs blocks✔Repairs freeze plug leaks✔Seals larger leaks seals More Detail+ #6 Bar’s Leaks 1111 Block Seal Permanent Head Gasket Fix 8.8 SCORE View Detail Buy it on Amazon ✔Repairs blown head gaskets✔Stops block leaks More Detail+ #7 Bar’s Leaks 1010 Engine Oil Stop Leak Concentrate, 11 oz, 1 Pack 8.6 SCORE View Detail Buy it on Amazon ✔Restores gaskets; seals to stop and prevent engine oil leaks✔Stops and seals motor oil leaks More Detail+ #8 - 50% Deal Bar’s Leaks – 1000 Engine Repair – 16.9 oz 8.2 SCORE View Detail Buy it on Amazon ✔Reduces oil consumption✔Helps clean internal parts✔Increases oil pressure More Detail+ #9 Bar’s Leaks Oil Seal Engine Oil Burning and Leak 8.0 SCORE View Detail Buy it on Amazon ✔Use 1/2 bottle for smaller systems (3. 5 - 4. 4 quarts of oil), in larger systems use 1 bottle for every 6 quarts, in small engines use approximately 3oz to every quart of oil✔Can also be used in heavy-duty applications as well as tractors, boats, RV's, motorcycles (including wet clutch), ATV's, lawn equipment✔This premium quality synthetic blend works with all types of motor/engine oil including regular petroleum, high mileage, synthetic blends and fully synthetic formulas More Detail+ #10 Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart 7.9 SCORE View Detail Buy it on Amazon ✔Reduces engine noise and oil consumption, while raising oil pressure✔Compatible with petroleum, semi-synthetic and full synthetic motor oils More Detail+ Recommended Categories related to Engine Leak Sealers Toy Excavato... Gopro Hdmi C... Walmart Pati... Stihl Screwd... XQD Card Rea... Editor’s Pick: Trending Products you will love XQD Card Readers 【Upgraded Version】USB C XQD Card Reader, Rocketek XQD Reader Compatible with Sony G/M Series USB Mark XQD Card, Lexar 2933x/1400x USB C Mark XQD Card for Windows/Mac OS. Type C XQD Memory Card Reader $39.88 View Detail XQD Card Readers 3-in-1 CFexpress/XQD/SD Card Reader USB C, VELOGK Dual-Slot USB 3.2(10Gbps) CFexpress Type B Card Reader Adapter compatible with Android/Windows/Mac OS/Linux, with Brushed Aluminum Case&Portable Pouch $49.99 View Detail XQD Card Readers 4-in-1 XQD Card Reader, USB 3.1 XQD SD Card Reader Dual-Slot Memory Card Reader Type C(5Gpbs) Sony XQD Reader Support Sony G/M Series, Lexar 2933x/1400x USB Mark XQD Card, SD/SDHC for Wins/Mac/Android View Detail XQD Card Readers VELOGK CFexpress/XQD Card Reader, Dual-Slot USB 3.2(10Gbps) CFexpress Type B Memory Card Reader Adapter Strongly Support CFexpress/XQD/SD Memory Cards, Compatible with Windows/Mac OS/Linux $47.99 View Detail