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Pros & Cons
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Engine Cleanliness
Customers have mixed opinions about the engine cleanliness aspect of BG109 Bg EPR Engine Performance Restoration 11 Fl Oz. While some report noticeable improvements such as smoother engines, increased responsiveness, and improved gas mileage, others caution against using it while driving the vehicle and express skepticism towards its effectiveness. Overall, customers who have used this product have reported cleaner engines and a restoration of engine performance in high-mileage vehicles.

Highlights
Quality
This stuff does what it says - i had a good amount of sludge on my 2013 honda pilot and this cleaned up most of it.
Its been about a month since we did this service and the oil is still nice and clean, no lopey idle, runs really smooth, feels ... Read More
Don’t run it in the vehicle and drive with it in it expecting to clean it you’ll actually do more harm than good since solvents... Read More
Left is my oil after 5000 miles before cleaning, right is after running the bg epr for 20 mins
Price
I bought this with my own money.
Competitiveness
Overall will be using this product again if i have similar scenarios with other vehicles
Overview
- How are reviewers describing this item?
good, clean, still, little and sure. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 38.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 1,363 reviews as of our last analysis date on Feb 28 2025.
Helpful InsightsBETA
Posted by a reviewer on Amazon
I bought this with my own money
Posted by a reviewer on Amazon
Immediately we noticed excessive oil burning due to the known piston ring defect
Posted by a reviewer on Amazon
I did some research and watched a few youtube videos of people showing their success with this product but was still skeptical
Posted by a reviewer on Amazon
With no guarantee of volvo completing a “goodwill repair” since i just bought the car and didn’t have the maintenance history from the previous owner i gave epr a shot
Posted by a reviewer on Amazon
I ran the engine at 1500 rpm for 20 minutes and when i drained the oil it was pitch black
Posted by a reviewer on Amazon
Just for reference the car should’ve burned 12 oz of oil by this point
Posted by a reviewer on Amazon
Dip stick is now silver instead of brown and i see a lot less sludge through the oil cap hole
Posted by a reviewer on Amazon
Left is my oil after 5000 miles before cleaning right is after running the bg epr for 20 mins
Review Count History
Price History
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