(9 pack) STP 65148 Oil Treatment - 15 fl. oz

Model: 8262B

Brand: STP

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Product Details

Oil Treatment Scientifically Engineered for Conventional or Synthetic Oils High Quality Base Stock Carrier of active ingredients to help protect internal engine parts Viscosity Index Improver (VII) Cushions engine parts to help reduce metal-to-metal contact Helps reduce oil consumption Zinc Dialkyl Dithiophosphate (ZDDP) Anti-wear agent that helps provide a layer of protection for engine parts

STP Oil Treatment, 15oz: For all cars, light trucks and SUVs High-viscosity formula Designed to help fight metal-to-metal friction Provides a thicker cushion between moving engine parts

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Last Updated: 2025-07-04 04:25:00

$4.98

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$6.49

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About this item features

ENGINE OIL ADDITIVE: One 15 fl oz bottle of STP Oil Treatment

an engine additive that helps lubricate moving engine parts and reduce oil consumptionENGINEERED FOR CONVENTIONAL AND SYNTHETIC OIL: This engine treatment is excellent for all cars

light trucks and SUVsFIGHTS FRICTION: High-viscosity formula with anti-wear agent ZDDP helps fight metal-to-metal friction by providing a thicker cushion between moving engine partsIMPROVES OIL PERFORMANCE: Reduces oil burning and consumption to improve oil performance and keep your engine running efficientlyUSE WITH EVERY OIL CHANGE: Simply add one 15 fl oz bottle of the engine oil treatment to 4-5 quarts of oil with every oil change to maintain peak engine performance

Product Specifications

Technical Details

Manufacturer	-
Brand	STP
Item model number	8262B
Color	Multicolor
Weight	-
Height	-
Depth	-

Additional Product Information

Product Id	303872
User Reviews and Ratings	4.8 (71 ratings) 4.8 out of 5 stars
UPC	071153651487

Description

STP High Viscosity Oil Treatment (15 fluid ounces) STP Oil Treatment fights friction to help protect against engine wear. This high-viscosity formula, complete with anti-wear agent ZDDP (Zinc Dialkyl Dithiophosphate), is specifically formulated to help fight metal-to-metal friction and helps reduce oil consumption. Lubricates moving engine parts by providing a thicker cushion between moving engine parts. Scientifically engineered for Conventional or Synthetic oils. This high viscosity formula can be used for all cars, light trucks and SUVs. Have you noticed a drop in performance lately? The moving parts in your engine operate under very tight tolerances. As mileage increases, excessive wear and friction can occur. This metal-to-metal condition could hurt your engine's reliability and overall performance. Guard against excessive friction with STP Oil Treatment. Add this car care treatment product to the engine oil during every oil change as part of routine car maintenance.

Contains zinc anti-wear agent ZDDP that fights metal-to-metal friction Reduces oil consumption Lubricates moving engine parts by providing a thicker cushion between moving engine parts Scientifically engineered for Conventional or Synthetic Oils High viscosity formula is compatible with cars, light trucks and SUVs for versatile use Add this STP Oil Treatment to the engine oil during every oil change as part of routine car maintenance

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#	Shop & Price	Reviews	User Ratings	Price
1	STP High Viscosity Oil Treatment (15 fluid ounces) Reviews: 199 app.ratings: (199) Price: $4.98 Visit Reviews: 199 (4.8)	199	(4.8)	$4.98 Visit
2	STP Oil Treatment Engine Oil Additive, 15 fl oz Bottle, Contains ZDDP Anti-Wear Agent to Fight Friction, Reduces Oil Burning and Consumption to Improve Performance Price: $6.49 Visit			$6.49 Visit
3	STP 65148 15 Oz Oil Treatment Price: $6.66 Visit			$6.66 Visit
4	STP 65148 15 Oz Oil Treatment Price: $7.34 Visit			$7.34 Visit
5	(9 pack) STP 65148 Oil Treatment - 15 fl. oz Price: $24.39 Visit			$24.39 Visit
6	Motor Oil (Pack of 6) Price: $50.97 Visit			$50.97 Visit

Top User Reviews and Ratings (10 total reviews)

(5)

Reviewed in the USA on Aug 11, 2025

I've been using STP High Viscosity Oil Treatment for many years, especially on flat tappet engines where there's inherently more metal-to-metal contact. Back in the 1990s, motor oils contained higher levels of zinc dialkyldithiophosphate (ZDDP), which served as a critical first line of defense against that kind of wear. Today's oils have far less ZDDP—not because it's ineffective, but because it can shorten catalytic converter life, and modern engines simply don't require as much due to lower internal friction and thinner viscosities designed to meet CAFE (Corporate Average Fuel Economy) standards. Most people will say adding anything to oil is a waste of money. Personally, I see this as a little bit of extra insurance for engines that are closer in design to racing applications. Yes, you could run a dedicated racing oil with higher ZDDP content for even more protection, but this is a quick, simple option—especially when topping off between oil changes. I also keep straight ZDDP on hand for certain situations, but STP High Viscosity Oil Treatment remains my go-to for ease of use. They even make a high-mileage version for engines with oil leaks or seepage, but since that's not an issue for me, I stick to the standard formula. For flat tappet engines in particular, this product has earned its place in my garage.