64,000+ results for additive
- TriboTEX Oil Additive: Treatment for Engine & Oil Automotive, with NanoparticlesOpens in a new window or tabFACTORY DIRECT - OIL ADDITIVEBrand New$97.99tribotex (2,389) 99.8%Free shippingFree returns685 sold
- XADO 1 Stage Maximum Engine Oil Additive - Protects Engine from Wear and TearOpens in a new window or tabOriginal XADO Direct US Seller IN STOCK Fast ShippingBrand New$49.49Save up to 15% when you buy morexado_us (1,786) 98.7%Free shipping111 sold
- REV X ZDDP Zinc & Phosphorus (5) - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$39.95Top Rated Plusrevxoil (3,404) 99.4%Free 2-4 day shippingFree returns1,627 sold
- BG 44K PLATINUM Fuel System Cleaner Additive 11oz. bottle 20811 - 2 PackOpens in a new window or tabBrand New$43.15Save up to 7% when you buy morehorsesntorque (1,877) 99.9%Free shipping143 sold
- Lucas Oil 10003 Fuel Injector Cleaner 1 Quart Automotive Additive FAST SHIPPINGOpens in a new window or tabBrand New19 product ratings - Lucas Oil 10003 Fuel Injector Cleaner 1 Quart Automotive Additive FAST SHIPPING$11.18166auto (4,440) 99.1%Free shipping432 sold
- ZDDPlus ZDDP Engine Oil Additive Restores Zinc Every Oil Change. 5 Pack DiscountOpens in a new window or tabBrand New$39.74Top Rated Plusoldbuickparts (33,902) 99.1%Free shippingFree returns1,430 sold
- BG 44K PLATINUM New Fuel System Cleaner Additive 11oz. Can PN 208 FREE SHIPPINGOpens in a new window or tabBrand New$21.00wild_773 (29) 100%Free shippingAlmost gone34 sold
- Yamaha Yamalube ACC-RNGFR-PL-12 Ring Free Plus Fuel AdditiveOpens in a new window or tabBrand New$21.93jorgensenpowersports (5,581) 99.2%Free shipping208 sold
Picked For You
Sponsored | Top selling items from highly rated sellers with free shipping- BG 44K PLATINUM Fuel System Cleaner Additive 11oz. Can PN 208 Free Funnel 3 PackOpens in a new window or tabBrand New$61.00Save up to 5% when you buy morehorsesntorque (1,877) 99.9%Free shipping629 sold
- Lucas Oil 10063, TB Zinc-Plus Engine Break-In Oil Additive, 16 OZ. BottleOpens in a new window or tabBrand New$15.86Top Rated Plusrace_choice (22,377) 99.6%Free shippingFree returns863 sold
- Liqui Moly 20004 Hydraulic Lifter Additive (300ml)Opens in a new window or tabBrand New$10.80Extra 10% off with couponWas: $18.00 40% offgarageman01 (32,737) 99%Free shipping5,324 sold
- Liqui Moly CeraTec Friction Modifier Oil Additive Protection Ceramic Wear 300MLOpens in a new window or tabBrand New$29.99autolubegroup1 (13) 100%Free shipping
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$14.00johntth-31 (288) 99.3%Free shippingAlmost gone53 sold
- HAPCO - 1 Gallon Lead Substitute Fuel Additive - TREATS UP TO 200 GALLONSOpens in a new window or tabBrand New$78.49Save up to 20% when you buy moreTop Rated PlusFree 2-4 day shippinghapco-products (2,071) 96.5%Free returns122 sold
- Archoil AR9100 1 Gallon Friction Modifier - Oil Additive - All VehiclesOpens in a new window or tabFAST AND FREE SHIPPING DIRECT FROM ARCHOILBrand New$229.95archoil (6,487) 99.8%Free shipping436 sold
- XADO Xtreme Economy Additive for Diesel Truck Fuel System Diesel AdditiveOpens in a new window or tabBrand New$19.99Top Rated Plusxado_us (1,786) 98.7%Free shippingFree returns132 sold
- DT 550 Friction Reducer Oil Additive, 16 Oz. Pint, Free Shipping!Opens in a new window or tabBrand New$26.99the_warehousing_center (622) 99.5%Free shipping58 sold
- Lucas 10063 TB Zinc-Plus Engine Break-In Oil Additive High-Zinc 16 Oz. (Qty 1)Opens in a new window or tabBrand New$15.89166auto (4,440) 99.1%Free shipping106 sold
- REV X ZDDP Zinc & Phosphorus - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$11.95Save up to 27% when you buy moreTop Rated PlusFree 2-4 day shippingrevxoil (3,404) 99.4%Free returns1,692 sold
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$12.95Save up to 5% when you buy moreuzmshahi_0 (82) 0%Free shipping10 watchers
- Motor Medic Motor Flush, Engine Additive, 32 Fl. Oz. Free&Fast ShippingOpens in a new window or tabBrand New$7.71sa58426831 (204) 97.7%Free 2-3 day shipping
- One New LIQUI MOLY Fuel Additive 2002Opens in a new window or tabBrand New$11.36166auto (4,440) 99.1%Free shipping50 sold
- Stanadyne Performance Formula Diesel Fuel Additive - 1/2 Gallon - Free ShippingOpens in a new window or tabBrand New44 product ratings - Stanadyne Performance Formula Diesel Fuel Additive - 1/2 Gallon - Free Shipping$35.99bgb127 (32) 100%Free shipping3 watchers
- Sea Foam SF-128 Gallon Motor Treatment Fuel Additive Marine Auto RV - 128 oz.Opens in a new window or tabBrand New$68.99heintzbrosauto1 (42,771) 99.4%Free shipping211 sold
- Rislone Hy-per Fuel Complete Fuel System Cleaner Gas Additive 16.9 ozOpens in a new window or tabBrand New$11.28tasty_talents (25) 93.1%Was: $12.00 6% offFree shippingFree returns
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$12.99infusionkey (779) 99.5%Free shipping5 watchers
- Mechanic in a Bottle Synthetic Fuel Additive for all Gasoline Engines 24 oz.Opens in a new window or tabBrand New$18.50smoothsailingllc (4,138) 97%Free shipping
- BG MOA Engine Oil Supplement Motor Oil Additive 110 -- Fast Free Shipping!!Opens in a new window or tabNew (Other)$17.85Extra 5% off with coupondistinctyachts (1,584) 99.5%Free shipping319 sold
- Stanadyne Performance Formula Diesel Additive 6/PK of 1/2 Gallons # 38566Opens in a new window or tabSouthwest Diesel - Authorized DistributorBrand New$199.00diesel_since1954 (4,284) 99.7%Free shipping194 sold
- Stanadyne Warm Weather Blend Diesel Additive 43570 12pk - 16ozOpens in a new window or tabBrand New$79.99vimarshi_madusha (48) 100%Free shippingfrom Sri LankaLast one1 watchers
- ✅ Liqui Moly 20004 Hydraulic Lifter Additive (300ml)Opens in a new window or tabBrand New$26.10lod_theod (164) 98%Free shippingBenefits charity
- Sea Foam SF16 Motor Treatment Automotive Additive, 16 ozOpens in a new window or tabBrand New$18.99smart-mart-online (51) 0%Free shippingFree returns
- New ListingGumout Fuel Injector Cleaner/Carb Cleaner Additive 6 oz - 510021W Free Shipping.Opens in a new window or tabBrand New$6.78uniquemartllc (5) 77.8%Free shipping
- Hot Shot's Secret Diesel Extreme, Clean & Boost Fuel Additive, 1 - 64oz BottleOpens in a new window or tabBrand New$43.95Save up to 7% when you buy moredesmoparts (22,280) 99.8%Free shipping801 sold
- Gumout Fuel Injector Cleaner/Carb Cleaner Additive 6 oz - 510021W ( Pack of 2 )Opens in a new window or tabBrand New$10.09Save up to 5% when you buy morecl53-69 (844) 98.7%Free shipping
- Lucas Oil 10002 Heavy Duty Oil Stabilizer One Gallon Jug Automotive AdditiveOpens in a new window or tabBrand New$31.00993232maoyi (366) 97.9%Was: $32.98 6% offFree shippingAlmost gone28 sold
- Charge-It CH-77 Battery Additive - 2 Oz.Opens in a new window or tabBrand New$10.00Top Rated Plusjb-tools (527,563) 99.3%Free shippingFree returns176 sold
- Red Line SI-1 Complete Fuel System Cleaner Additive Lubricant (15-Ounce Bottle)Opens in a new window or tabBrand New$19.19Top Rated Plussparktecmotorsports (50,054) 99.8%Free shippingFree returnsAlmost gone241 sold
- 10 ZDDPlus ZDDP Engine Oil Zinc Additive - Save your Engine!Opens in a new window or tabBrand New$93.99abcdirectautoparts (19,818) 98.2%Free shipping319 sold
- Racegas 100032 Case of 3 Cans of Competition Race Fuel Concentrate Additive 32ozOpens in a new window or tabBrand New$96.39Top Rated Plushoerrracing (60,545) 99.6%Free shippingFree returns
- System 48 Engine AdditiveOpens in a new window or tabBrand New$2.00cheput55 (18) 100%+$7.57 shipping
- Motor Medic Motor Flush, Engine Additive, 32 Fl. Oz. Free&Fast Shipping.Opens in a new window or tabBrand New$6.47luboboybew (334) 88%Free shippingfrom ChinaLast one9 sold
- Hot Shot's Secret Diesel Extreme Diesel Fuel AdditiveOpens in a new window or tabBrand New$18.97xokd962 (1,175) 97.3%Free shippingFree returnsAlmost gone11 sold
- Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZOpens in a new window or tabBrand New$48.88imalkaso85 (6) 100%Free shippingfrom Sri Lanka
- Lucas Oil 10002 Heavy Duty Oil Stabilizer One Gallon Jug Automotive AdditiveOpens in a new window or tabBrand New$28.99ahtrose_fritz-1.11.35 (11) 0%Free shippingfrom VietnamLast one11 watchers
- OEM Genuine Toyota Fuel EFI Tank Additive 00289-EFI34 6.76 FL.OZOpens in a new window or tabBrand New$25.99Save up to 10% when you buy moremiatoyotaparts (32,624) 98.9%Free shipping
- 2 ZDDPlus ZDDP Engine Oil Additive - Save your Engine!Opens in a new window or tabBrand New$27.99abcdirectautoparts (19,818) 98.2%Free shipping244 sold
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$16.99lcarlow (29) 87.5%Free shipping
- Lucas Oil 10002 Heavy Duty Oil Stabilizer One Gallon Jug Automotive AdditiveOpens in a new window or tabBrand New$30.81qikyc2 (22) 100%Was: $32.78 6% offFree shipping
- Bar's Leaks High Mileage Engine Repair Additive, 16.9 ozOpens in a new window or tabBrand New$12.98sophia-louis (280) 97.9%Free shippingFree returnsLast one2 watchers
- LUCAS ENGINE OIL STOP LEAK HIGH MILEAGE TOPOFF ADDITIVE 11100 (1 QUART) USAOpens in a new window or tabBrand New$16.49alltimeseller2150 (146) 0%Free shipping
- REV X ZDDP Zinc & Phosphorus (3) - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$28.95Save up to 17% when you buy moreTop Rated PlusFree 2-4 day shippingrevxoil (3,404) 99.4%Free returns68 sold
- 2x Yamaha Yamalube Ring Free Plus Fuel Additive Outboard Boat ACC-RNGFR-PL-12Opens in a new window or tabBrand New$54.99fcrvmarine (19,645) 97.7%Free shipping
- Power Plus Top Lube 2 Pack Grape/Cherry Scented Fuel Additive for Gas/MethanolOpens in a new window or tabBrand New$31.90northbranchsynthetics (13,034) 97.8%Free shipping138 sold
- 2PK Stanadyne Performance Formula Diesel Fuel Additive - 1/2 Gallon -Part #38566Opens in a new window or tabBrand New$60.00greenlife_store (2,113) 98.5%Free shippingLast one1 watchers
- New ListingStanadyne Winter 1000 Cold Weather Fuel Additive 45697- 64ozOpens in a new window or tabBrand New$29.99siriyalashalika_0 (49) 0%Free shippingfrom Sri Lanka
- BG MOA Engine Oil Supplement Motor Oil Additive ADVANCED -- 3 PACK!! FREE SHIPOpens in a new window or tabNew (Other)$42.95Extra 5% off with coupondistinctyachts (1,584) 99.5%Free shipping36 watchers
- Car Fuel Cleaner Gas Oil Additive Remove Engine Carbon Deposit Increase PowerOpens in a new window or tabBrand New$9.09 to $21.90sunshine_walkings88 (767) 97.5%Was: $14.63 5% offFree shipping
- Wax Additive - 4 oz Surfacing Agent for use with Gelcoat and Polyester resinsOpens in a new window or tabBrand New$16.99Top Rated Plusfiberglasssupplydepot (8,334) 99.7%Free shippingFree returns995 sold
- New Listinggasoline additiveOpens in a new window or tab$25.00bkdecoteau (565) 100%+$15.45 shipping
- Genuine GM ACDelco Limited Slip Axle Lubricant Additive 4oz 88900330Opens in a new window or tabBrand New$11.95Save up to 5% when you buy morehga_performance (30,305) 98.8%Free shipping549 sold
- Motorcraft additive XL-3 4 oz. , free shipping !Opens in a new window or tabBrand New$12.95Save up to 20% when you buy more4vlodke (17,992) 99.5%Free shipping
- Liqui Moly MoS2 Anti Friction Treatment Engine Oil Additive LM 2009 - 300 mlOpens in a new window or tabBrand New$15.99Save up to 5% when you buy moreg-99shop (13) 93.3%Free shipping
- Torco ZEP Zinc Engine Protector Oil AdditiveOpens in a new window or tabBrand New$17.35torco1950 (9) 100%+$9.00 shipping
- New ListingHPZ212 Zinc Replacement Oil Additive - 12 Oz. (Pack of 4)Opens in a new window or tabBrand New$22.40mode1975 (7) 100%Free shippingFree returns
- REPACKAGED Mobius & Kluber Watchmaking Oils & Greases - USA SELLEROpens in a new window or tabNew (Other)$5.99 to $109.99Extra 5% off with couponds_watch_shop_and_supply (1,026) 100%+$4.36 shipping
- 32 oz Enzyme Fuel Treatment Additive 93032Opens in a new window or tabBrand New$20.03softok_54 (32) 97.1%Was: $28.21 29% offFree shippingFree returns
- BG 44K PLATINUM New Fuel System Cleaner Additive 11oz. Can PN 208 Free ShippingOpens in a new window or tabBrand New$23.49believe-yourself (92) 96.9%Free shipping
- Comp Cams 159 12 oz Engine Zinc ZDDP Break-In Oil Additive LubeOpens in a new window or tabBrand New$21.53Top Rated Plusamsracing (44,528) 99.8%Free shippingFree returns1,569 sold
- Archoil AR9100 16oz Friction Modifier - Oil Additive - PowerStroke FixOpens in a new window or tabFAST AND FREE SHIPPING DIRECT FROM ARCHOILBrand New$44.95archoil (6,487) 99.8%Free shipping4,356 sold
- Stanadyne Performance Formula Diesel Fuel Additive - 24 PK of 1/2 Pints # 38564Opens in a new window or tabSouthwest Diesel - Authorized DistributorBrand New12 product ratings - Stanadyne Performance Formula Diesel Fuel Additive - 24 PK of 1/2 Pints # 38564$140.00Save up to 5% when you buy morediesel_since1954 (4,284) 99.7%Free shipping248 sold
- Helix 5 IN 1 Fuel Treatment Additive Stabilizer 8 FL OZ 16 Gallon TreatmentOpens in a new window or tabBrand New$17.95mcatvme (15,286) 99.8%Free shippingFree returns128 sold
- STP Gas Treatment, 5.25 Fluid Ounces Bottle, 18039, Fuel Additive ( Pack of 3)Opens in a new window or tabBrand New$14.99Save up to 5% when you buy morecl53-69 (844) 98.7%Free shipping
- Royal Purple Max-Clean 11722 Fuel System Cleaner Automotive Additive, 20 ozOpens in a new window or tabBrand New$26.90khrismart (1,480) 97.2%Free 2-4 day shipping
- Schaeffer's Carbon Treat Diesel Fuel Additive All Season 16 oz Set of 3Opens in a new window or tabBrand New$52.50greenboxtrading (37,165) 99.1%Free shippingFree returnsLast one2 watchers
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