35,000+ results for additive
- Lubegard Transmission Fluid Additive Instant Shudder Fixx (12 Tubes)Opens in a new window or tabBrand New$99.99Free shippingSave up to 20% when you buy moremarvelautomotive (1,034) 98.4%
- TriboTEX Oil Additive: Treatment for Engine & Oil Automotive, with NanoparticlesOpens in a new window or tabFACTORY DIRECT - OIL ADDITIVEBrand New$97.99Free shippingFree returns703 soldtribotex (2,407) 99.7%
- Doc's Diesel THE DIESEL TREATMENT Diesel Fuel Additive (16oz) Squeeze BottleOpens in a new window or tabBrand New$23.99Free 3-4 day shipping103 soldSave up to 12% when you buy moredocsdiesel (1,815) 98.9%
- 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$49.49Free 1-4 day shipping117 soldSave up to 15% when you buy morexado_us (1,798) 98.8%
- REV X ZDDP Zinc & Phosphorus - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$11.95Free 2-3 day shippingFree returns1,711 soldSave up to 27% when you buy moreTop Rated Plusrevxoil (3,446) 99.4%
- Lucas Oil 10063, TB Zinc-Plus Engine Break-In Oil Additive, 16 OZ. BottleOpens in a new window or tabBrand New$15.86Free shippingFree returns887 soldTop Rated Plusrace_choice (22,671) 99.7%
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$12.95Free shippingAlmost gone27 soldSave up to 5% when you buy moreuzmshahi_0 (88) 100%
- REV X ZDDP Zinc & Phosphorus (5) - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$39.95Free 2-3 day shippingFree returns1,642 soldTop Rated Plusrevxoil (3,446) 99.4%
Picked For You
Sponsored | Top selling items from highly rated sellers with free shipping- BG 44K PLATINUM New Fuel System Cleaner Additive 11oz. Can PN 208 Free ShippingOpens in a new window or tabBrand New$23.15Free shippingFree returns1,336 soldTop Rated Plushorsesntorque (1,924) 99.9%
- DT 550 Friction Reducer Oil Additive, 16 Oz. Pint, Free Shipping!Opens in a new window or tabBrand New$26.99Free shipping67 soldthe_warehousing_center (657) 99.3%
- ZDDPlus ZDDP Engine Oil Additive Restores Zinc Every Oil Change. 5 Pack DiscountOpens in a new window or tabBrand New$39.74Free shippingFree returns1,439 soldTop Rated Plusoldbuickparts (34,157) 99%
- Yamaha Yamalube ACC-RNGFR-PL-12 Ring Free Plus Fuel AdditiveOpens in a new window or tabBrand New$21.76Free shipping236 soldjorgensenpowersports (5,644) 99.1%
- XADO Diesel Truck - Engine Repair Wear Protection Engine Oil Additive TreatmentOpens in a new window or tabOriginal XADO Direct USA FAST&FREE ShippingBrand New$129.90Free 1-4 day shippingFree returns68 soldSave up to 15% when you buy moreTop Rated Plusxado_us (1,798) 98.8%
- HAPCO - 32 oz. Lead Substitute Fuel Additive - TREATS UP TO 50 GALLONSOpens in a new window or tabBrand New$34.99Free 2 day shippingFree returns122 soldSave up to 40% when you buy moreTop Rated Plushapco-products (2,079) 96%
- BG 44K PLATINUM New Fuel System Cleaner Additive 11oz. Can PN 208 - 5 PackOpens in a new window or tabBrand New$95.50Free shipping318 soldSave up to 10% when you buy morehorsesntorque (1,924) 99.9%
- BG 44K PLATINUM New Fuel System Cleaner Additive 11oz. Can PN 208 2 PackOpens in a new window or tabBrand New$41.95Free shipping488 soldSave up to 5% when you buy morehorsesntorque (1,924) 99.9%
- 2x Stanadyne Performance Formula Diesel Fuel Additive 1/2 Gallon - Part # 38566Opens in a new window or tabBrand New44 product ratings - 2x Stanadyne Performance Formula Diesel Fuel Additive 1/2 Gallon - Part # 38566$55.99Free shippingAlmost gone9 soldefrru-11 (6) 100%
- tribotex oil additiveOpens in a new window or tabBrand New$85.00+$4.38 shippingLast one2 watchersseanbenton32 (218) 100%
- 2 PACKS Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive/Opens in a new window or tabBrand New16 product ratings - 2 PACKS Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive/$27.00Free shipping9 watchersaudi-1557 (9) 76.5%
- Gumout Fuel Injector Cleaner/Carb Cleaner Additive 6 oz - 510021W ( Pack of 2 )Opens in a new window or tabBrand New$8.99Free shipping12 soldSave up to 5% when you buy morecl53-69 (885) 98.8%
- Rislone High Mileage Engine Treatment Conditioner & Cleaner Additive, 16.9 oz;Opens in a new window or tabBrand New$5.62Free shippingfrom Chinalimilin128 (2) 75%
- Archoil AR9100 16oz Friction Modifier - Oil Additive - PowerStroke FixOpens in a new window or tabFAST AND FREE SHIPPING DIRECT FROM ARCHOILBrand New$44.95Free shipping4,381 soldarchoil (6,527) 99.8%
- Genuine GM ACDelco Limited Slip Axle Lubricant Additive 4oz 88900330Opens in a new window or tabBrand New$11.95Free shipping577 soldSave up to 5% when you buy morehga_performance (30,643) 98.7%
- New ListingAdvanced Plaque and Tartar Water Additive, 17Oz – Dog Teeth Cleaning Formula toOpens in a new window or tabBrand New$14.11Free shippingFree returnspcsunset (23) 100%
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$11.99Free shippingw46vm_90 (19) 95%
- Liqui Moly CeraTec Friction Modifier Oil Additive Protection Ceramic Wear 300MLOpens in a new window or tabBrand New$29.99Free shippingautolubegroup1 (23) 100%
- Motul Professional Hydraulic Lifter Care Oil Additive - 300mlOpens in a new window or tabBrand New$19.79Free shippingFree returnsTop Rated Plustswarehouse (57,754) 99.7%
- REV X ZDDP Zinc & Phosphorus (2) - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$22.95Free 2-3 day shippingFree returns362 soldSave up to 30% when you buy moreTop Rated Plusrevxoil (3,446) 99.4%
- Opti-Lube XPD Diesel Fuel Additive: 1 Gallon without AccessoriesOpens in a new window or tabBrand New$82.37Free shipping200 soldopti-lube (446) 99.1%
- 2x Yamaha Yamalube Ring Free Plus Fuel Additive Outboard Boat ACC-RNGFR-PL-12Opens in a new window or tabBrand New$54.99Free shippingfcrvmarine (19,773) 97.6%
- Lubegard Transmission Fluid Additive Instant Shudder Fixx (2 fl oz. Tube)Opens in a new window or tabBrand New$14.99Free shippingSave up to 20% when you buy moremarvelautomotive (1,034) 98.4%
- REPACKAGED Mobius & Kluber Watchmaking Oils & Greases - USA SELLEROpens in a new window or tabNew (Other)$5.99 to $99.99+$4.36 shippingExtra 5% off with couponds_watch_shop_and_supply (1,054) 100%
- Comp Cams 159 12 oz Engine Zinc ZDDP Break-In Oil Additive LubeOpens in a new window or tabBrand New$19.99Free shippingFree returnsAlmost gone1,574 soldTop Rated Plusamsracing (44,797) 99.8%
- DT 550 Friction Reducer Oil Additive, 1 Quart, Free Shipping!Opens in a new window or tabBrand New$44.95Free shipping15 watchersthe_warehousing_center (657) 99.3%
- ( 2 Pack ) Ethanol Shield 8 oz. Fuel Additive StabilizerOpens in a new window or tabBrand New$17.99Free shippingoceansandskies (81) 100%
- G.M. LIMITED SLIP ADDITIVE PT # 88900330 (10-4003) (REPLACEMENT FOR 1052358)Opens in a new window or tabBrand New$12.50Free shippingFree returns1,100 soldfire5auto (39,655) 99.6%
- Wax Additive - 4 oz Surfacing Agent for use with Gelcoat and Polyester resinsOpens in a new window or tabBrand New$16.99Free 2-3 day shippingFree returns1,004 soldfiberglasssupplydepot (8,386) 99.9%
- Sherwin-Williams Urethane Flexible Additive - Pint V6V299Opens in a new window or tabBrand New$17.64+$6.00 shippingkenwardii (289) 95.2%
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$16.43Free shippingAlmost gone14 soldinfusionkey (909) 99.4%
- Lucas Oil 10278 Engine Oil Stop Leak -32 Ounce Quart Automotive Additive 2 PoundOpens in a new window or tabBrand New$11.98Free shippingLast one1 watcherscompetitivelegionsllc (173) 97.8%
- 2X ZDDPlus ZDDP Engine Oil Additive Restores Zinc Every Oil Change | 2 BottlesOpens in a new window or tabBrand New$26.99Free shippingFree returnsTop Rated Plusoldbuickparts (34,157) 99%
- System 48 Engine AdditiveOpens in a new window or tabBrand New$2.00+$7.57 shippingcheput55 (20) 100%
- Liqui Moly Hydraulic Lifter Additive LM20004 (2) 300ml Cans 10.14 oz.ea.Opens in a new window or tabBrand New$23.90Free 2-3 day shipping380 soldimpart1731 (73,563) 99%
- FLITZ Tumbler Media Additive 7.6oz/225ml Bottle TA04885 (SEE VIDEO)Opens in a new window or tabBrand New$16.95Free shipping81 soldscgra33 (2,312) 99.8%
- DR TRANNY LUBEGARD TRANSMISSION INSTANT SHUDDER FIX FIXX SYNTHETIC ADDITIVEOpens in a new window or tabBrand New$11.90Free 2-3 day shipping987 soldSave up to 10% when you buy morekressautochris (38,156) 99.8%
- Sea Foam SF-128 Gallon Motor Treatment Fuel Additive Marine Auto RV - 128 oz.Opens in a new window or tabBrand New$68.99Free shipping218 soldheintzbrosauto1 (43,012) 99.4%
- Ford Motorcraft OEM XL3 Friction Modifier Additive Limited Slip DifferentialsOpens in a new window or tabNew (Other)$13.74Free shippingAlmost gone2,356 soldnlassupplies (110,458) 98.7%
- Rislone Hy-per Fuel Complete Fuel System Cleaner Gas Additive 16.9 ozOpens in a new window or tabBrand New$11.39Was: $11.995% offFree shippingFree returnsLast one7 soldtasty_talents (119) 98.4%
- REV X ZDDP Zinc & Phosphorus (3) - Engine Oil Additive - Restore the ProtectionOpens in a new window or tabBrand New$28.95Free 2-3 day shippingFree returns70 soldSave up to 17% when you buy moreTop Rated Plusrevxoil (3,446) 99.4%
- PVP Industries Quart - 4 cu. ft. Organic Perlite Planting Soil Additive Gi,WhiteOpens in a new window or tabBrand New$38.99Free shippingFree returnsLast one14 soldbabys_boutiques (175) 97.8%
- RedLine- Engine Oil Break-In Additive - 16 oz. -PN: 81403Opens in a new window or tabBrand New$22.99Free 2 day shippingFree returnsTop Rated Plushoerrracing (60,896) 99.6%
- Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 20Opens in a new window or tabBrand New$12.85Free shippingFree returnsAlmost gone11 soldprism_inc (125) 99.2%
- Wella Color Toner & Additive 1.42 oz (Pick your color)Opens in a new window or tabBrand New$7.95Free shippingFree returns1,425+ soldSave up to 10% when you buy moreTop Rated Plusluv4everbeauty (10,515) 99.5%
- PowerPlus Lubricants Fuel Additive Alcohol Top Lube Grape Scented 16oz-FragranceOpens in a new window or tabBrand New$20.39Free shipping431 soldSave up to 10% when you buy moreheintzbrosauto1 (43,012) 99.4%
- LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020Opens in a new window or tabNew (Other)$14.99Free shippingFree returnsTop Rated Plusamazingdeals786 (985) 98.4%
- 20g KolorEFX Pearl Pigment Paint Additive for Art Polish Epoxy Resin PlastidipOpens in a new window or tabBrand New$8.49 to $10.49+$5.25 shipping107+ soldkolorefx (7,034) 100%
- New ListingGenuine Ford Additive Oil Friction Modi XL-3Opens in a new window or tabNew OEM Factory PartBrand New$13.09Free shippingebyfordparts (350) 100%
- ✅ Liqui Moly MoS2 Anti Friction Treatment Engine Oil Additive LM 2009 - 300 mlOpens in a new window or tabBrand New$16.00Free shippingoempartsplanet (637) 98.9%
- Sea Foam 16 Ounce TT-16 Trans Tune Transmission Additive-16 ozOpens in a new window or tabBrand New$17.79Free shippingFree returnsAlmost gone11 soldmatontsjack (16,165) 97.7%
- Howards Cams Inc Engine Oil Additive 99000; ZPM Break-In, 4oz Cam Break-InOpens in a new window or tabPerformanceParts - Right Parts, Right Price, Right AwayBrand New$15.14Free shipping78 soldperformancepartsracing (112,735) 99.7%
- Rislone Hy-per Fuel Injector Cleaner Fluid Heavy Duty Additive 32 ozOpens in a new window or tabBrand New$15.99Free shippingFree returns3 watchersbeningaecom (1,350) 98.6%
- Power Plus 19769-32 Fuel Additive Fuel Fragrance Groovy Grape ScentOpens in a new window or tabBrand New$16.99Free shipping1,943 soldSave up to 10% when you buy morenorthbranchsynthetics (13,108) 98.1%
- Botanicare Cal Mag Plus 32 oz / 1 Quart - magnesium nutrient additive cal-mag qtOpens in a new window or tabBrand New$22.19Free 2 day shippingFree returns2,353 soldTop Rated Plusgf_agriculture (45,542) 99.6%
- BMW Genuine OEM Twin Power Turbo Additive Pe 83-19-5-A07-750Opens in a new window or tabOTHERBrand New$14.72Free shipping110 soldbmwofatlanticcity (20,984) 99.7%
- ATP ST-1014 Motor Oil Additive Zinc Additive High Zinc 15ozOpens in a new window or tabBrand New$14.94Free shippingcurbhoppers (6,417) 98.6%
- VW Volkswagen GAS ENGINE Fuel Treatment Additive Genuine OEM BRAND NEW OriginalOpens in a new window or tabNEW OEM PARTS. TRUSTED FOR 17+ YEARS! QUIRKPARTSBrand New$26.22Free shippingFree returns374 soldTop Rated Plusquirkparts (982,095) 98.7%
- Lucas Oil 10002 Heavy Duty Oil Stabilizer One Gallon Jug Automotive AdditiveOpens in a new window or tabBrand New$32.98Free shippingAlmost gone41 sold993232maoyi (618) 97.8%
- Lucas Oil 10003 Fuel Injector Cleaner 1 Quart Automotive Additive Made in USAOpens in a new window or tabBrand New$15.69Free shipping29 soldSave up to 11% when you buy moreprimeapexunlimited (293) 99%
- Power Plus 19769-71 Fuel Additive Fuel Fragrance Reefer Madness Scent 4ozOpens in a new window or tabBrand New$13.70Free shipping471 soldSave up to 10% when you buy morenorthbranchsynthetics (13,108) 98.1%
- High Performance Zinc Replacement Additive Compatible With All Motor Oils 12 ozOpens in a new window or tabBrand New$16.02Free shippingFree returnsAlmost gone10 soldjustintimegifts (64,690) 99.5%
- Stanadyne Performance Formula Diesel Fuel Additive - 1/2 Gallon - Part # 38566Opens in a new window or tabSouthwest Diesel - Authorized DistributorBrand New$44.00Free 2-4 day shipping683 soldSave up to 6% when you buy morediesel_since1954 (4,312) 99.7%
- 10 ZDDPlus ZDDP Engine Oil Zinc Additive - Save your Engine!Opens in a new window or tabBrand New$93.99Free 4 day shipping322 soldabcdirectautoparts (19,835) 98.2%
- DT 550 Friction Reducer Oil Additive, 1 Gallon, Free Shipping!Opens in a new window or tabBrand New$107.95Free shipping25 soldSave up to 10% when you buy morethe_warehousing_center (657) 99.3%
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