Berryman 7516 High Mileage Fuel System Rejuvenator, Pour Can 15 fl.oz

Bought a 2007 Rav4 4-cylinder without knowing about the oil burning issues with the piston rings. It started getting pretty bad, like a quart of oil per 300 miles. Seafoam or the normal B12 did not seem to help. Based on the review here, I decided to try it and let me tell you it works (at least the first time). It did make my engine misfire once (probably from carbon burning up) but after running it through the whole tank, oil burning is now about a quart per 1000 miles. Over time it has been creeping back up. I have tried using this again and the regular B12. It seems after using this once, the difference between using this and B12 is negligible so save yourself some money on future and just get B12. Now, I just use a B12 before every oil change and that seems to be keeping the oil burning at around a quart per 700 miles. Hopefully this keeps it manageable until the car gives out. I have considered doing a B12 piston soak but haven't found the time.

This stuff is unbelievable! Works so well I've tried all types of fuel system cleaners in my 2007 GMC YUKON DENALI 6.2L but this and BG44K is the absolute best ,a difference that you can really notice. I had a little tap in the engine that would go away after a while I tried Marvel Mystery oil, " did nothing" and a few others I can't remember, but when I drove all the gas out and poured this in, then filled up after about a full day of driving I notice the tap went a away to a very smooth idol wow I'm guessing it cleaned the lifters to get them unstuck, a major problem with these trucks. I'll probably stock up because anything that works well in life companies like to discontinue smh. Get this you'll love it!

Used on my motorcycle 8k mi victory hammer, sat for over 3 years amazingly started up put sea foam in 1oz/gal. Rode short distances ok. But the engine started hesitating, no power when I throttled kept feeling like the bike was going to putter out. I was told by a shop it could cost upwards of $1500 to change the entire fuel filter system because it’s inside literally in the gas tank. Before paying all that money I first did some long overdue maintenance changed the oil, spark plugs, cleaned out the KN air filter. And while it would idle ok when I rode, same issue hesitation when throttling no power. Almost called the mechanic, but I read about people’s success and luck with Berryman. And the reviews are not kidding! I put an ounce, maybe a little more, because I eyeball it along with 1 gallon of fuel, because I wanted it to be concentrated. Let the bike run for 30 minutes and took it for a ride no more hesitation. I did a second round of the Berryman’s 1oz/1gal of ethanol free fuel from the local Wawa seems the only place that has ethanol free. And with the oil change, spark change air filter, and of course the star of the show Berryman it did the trick the bike runs like new. do I probably have to change out the fuel filter at this point? She’s purring like a kitty at this point so if it ain’t broke… There was a lot left I put it in my suv 20-6 Lincoln Nav L and noticed more power, smoother and quieter engine, can’t even tell if running. Used sea foam, Lucas, chevron, fuel cleaners, they don’t hold a candle imo to berrymans.

Great product but the price has doubled since July 2023

Very good for high mileage vehicles

I have an older Bobcat 742 skid steer with the 4 cyl. Ford engine. The engine was rebuilt 2 years ago but was not running well. Would run for a little while and then stall and die. When it was running it would not take any sudden throttle. If you increased throttle it would stall. I replaced all filters and plugs and also used a spray carb cleaner with no improvement. On a recommendation, I tried the Berryman B-12 and got some improvement so I ordered the B-60. I got a steady improvement over about an hour of running. (actually a couple of 15-20 min sessions) It is now running great and has been for the last six months. Never better. Unfortunately it seems to have affected the fuel sender which went bad during this period. I was able to replace that for $20 with an aftermarket Doorman for $20 and that is still working after a few months. I highly recommend trying this Berryman product. It worked where others failed and saved me a difficult carb repair.

The very best on the market

Assumed I'd be wasting $19, but thought it might be a low/no risk fix for a 2011 Honda CRV with oil consumption issues. That engine was poorly made and suffered from some piston ring stickiness that leads to blow by, oil consumption and PCV fouling. Prior to this, tried a number of other non invasive things including replacing PCV. Pre treatment: Oil consumption of 1 qt per 1000 miles (.95ml / mile) using 0w-20. MPG 21-22 on 80/20 highway/city. Oil smelled strongly of fuel, suggesting perhaps fuel dilution also happening. Spark plugs 1,2,4 looked fine. Plug 3 had some oil fouling on it. I suspect that's the cylinder with the oil control ring issue. Process: 1. Fresh oil 0w-20 change. 2. Added the Berryman high mileage to full tank. Ran tank nearly empty, refuelled. 3. Verified oil level. 4. Took some road trips. Results: Two road trips of about 1400 miles. Hot weather (90F), interstate driving at 70-80mph for 16 hours total engine time. Up and down hills. Aggregate fuel economy over the 1400 miles via the onboard: 24.3 mpg. (Previous 21). Oil consumption: 500ml (.35ml / mile). This type of driving is the worst case scenario for oil consumption. High load, high speed, high heat. Post treatment there was a ~2 mpg increase in fuel economy, and 63% decrease in oil consumption. It's a little early to claim victory on this, but I'm genuinely surprised. I didn't change any other variables except the Berrymans. Conclusion: If you have a minor issue of a gummed up oil control ring, you might get good results from this. It seems to have helped compression (I didn't check with a gauge so all anecdotal) and fuel economy (also increased compression).