STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz
STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz
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STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz

4.8 stars out of 149 reviews
(4.8)|
149 ratings
STP Synthetic Oil Treatment Engine Oil Additive, 15 fl ozSTP Synthetic Automotive Oil Treatment 15 fl oz Bottle12 pack STP Synthetic Automotive Oil Treatment 15 fl oz Bottle2 pack STP Synthetic Automotive Oil Treatment 15 fl oz Bottle6 pack STP Synthetic Automotive Oil Treatment 15 fl oz Bottle
Pack Size:Single

Key item features

  • Product Size: One 15 fl oz bottle of STP Synthetic Oil Treatment
  • Low-Viscosity Formulation: Formulated especially for low-viscosity oils with extra protection for extended oil drain intervals
  • Engine Cleanliness: Detergents in STP Oil Treatment help to keep the engine clean and prevent deposits
  • Oil Durability: Enhances oil durability to prevent breaking down synthetic oil
  • Engine Protection: Helps protect against engine wear
  • Routine Use: Add to your synthetic oil during each routine oil change
  • High-Quality Base: Uses a high-quality synthetic base oil so it doesn't dilute your motor oil
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Current price is $8.9259.5 ¢/fl oz
Price when purchased online
  • Free 90-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $8.92
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $8.92

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STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz $8.92 59.5 ¢/fl oz

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4.8 out of 5 Stars. 149 reviews

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Customer ratings & reviews

4.8 out of 5 stars
stars149 ratings58 reviews
How item rating is calculated
  1. 5 stars90% (134)
  2. 4 stars8% (12)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star2% (3)

Reviews summary

Pros
  • : Engine runs smoothly with lubricated components.
  • : Provides improved engine performance and oil longevity.
  • : Offers value-based pricing.
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Showing 1-3 of 58 reviews

Jul 6, 2025
anonymous
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Really restored my car's performance!

Works like a charm and highly economical. One bottle before changing your oil and it really cleans out the built up gunk! Be sure to follow directions.

Helpful?32BEQ2IM94WY49850176
Sep 16, 2025
Bigbob
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Always have trusted STP products, with the high performance required of today's engines, and the extended period between oil changes I have confidence when I add STP synthetic oil treatment to my engine oil

Helpful?32BEQ2IM94WY49850176
Jul 11, 2025
Steven
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I've always used this product with every oil change, its add more lubricant to the inside of my motor and helps things run more smoothly

Helpful?32BEQ2IM94WY49850176