STP Super Concentrated High Mileage Engine Flush (15 fl. oz.)
STP Super Concentrated High Mileage Engine Flush (15 fl. oz.)
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STP Super Concentrated High Mileage Engine Flush (15 fl. oz.)

4.8 stars out of 130 reviews
(4.8)|
130 ratings
STP Super Concentrated High Mileage Engine Flush (15 fl. oz.)STP Super Concentrated High Mileage Engine Flush 15 fl oz6 pack STP Super Concentrated High Mileage Engine Flush 15 fl oz2 pack STP Super Concentrated High Mileage Engine Flush 15 fl oz3 pack STP Super Concentrated High Mileage Engine Flush 15 fl oz12 pack STP Super Concentrated High Mileage Engine Flush 15 fl oz24 pack STP Super Concentrated High Mileage Engine Flush 15 fl oz
Pack Size:Single

Key item features

  • Engine Improvement: Scientifically engineered to improve the oil drain for vehicles over 75K miles.
  • Deep Cleaning: Super concentrated cleaning agents actively clean deposits in the engine.
  • Sludge Reduction: Helps reduce sludge and varnish on cylinder heads.
  • Deposit Dissolution: Formulated to help dissolve engine deposits.
  • Seal Safety: Will not harm seals and is safe to use every oil change when used as directed.
  • Usage Instructions: Pour entire bottle into oil crankcase, run engine at idle for 5 to 15 minutes, then drain and refill with new oil.
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Current price is $6.2741.8 ¢/fl oz
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Columbus, 43215
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Sold and shipped by Walmart.com
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Customer ratings & reviews

4.8 out of 5 stars
stars130 ratings45 reviews
How item rating is calculated
  1. 5 stars85% (111)
  2. 4 stars10% (13)
  3. 3 stars3% (4)
  4. 2 stars0% (0)
  5. 1 star2% (2)

Reviews summary

Pros
  • : Offers affordable options for customers.
Cons
  • : Struggles to fully remove impurities, affecting oil color.
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Showing 1-3 of 45 reviews

Sep 1, 2025
Michael
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Very very powerful

This is some powerful stuff. I have a 2003 and actually didn't need an oil change or followed the directions to the T. I drove about 40 miles. This morning when I started my car I could hear all the junk it loosened and removed. Now I'm waiting for Walmart to bring my oil and filter. I'm changing the oil 4000 miles ahead of time. I'm just wondering if all that stuff I heard will actually come out of the drain hole. I will update

Helpful?5JCCH7619AN6430861886
Oct 12, 2025
Arnel
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Change oil

Good and cheap. I used it every time I changed oil

Helpful?5JCCH7619AN6430861886
Apr 15, 2024
Thomas
5 out of 5 stars review

Verified Purchase

Does Great

it does loosen the sludge and build up in older vehicles and engines. I have a 1986 Chevy C10 and it does well breaking down the grime in the engine. now no product will completely clean the inside but this product does as well as it describes. I have not had any issues with using this product.

Incentivized Review
Helpful?5JCCH7619AN6430861886