Halfords Ratings and Reviews

Fuel & Oil Additives Reviews

Overall Rating:5 out of 5 stars.
"Ideal for petrol mowers spray into air intake and mower starts first time No more yanking on the cord especially if you are a pensioner like me . Without it I was Knackered before I started"... (read full reviews)
Overall Rating:5 out of 5 stars.
"Great product, seen a difference in engine noise and the car is a lot quicker off the line. The car feels a lot smoother."... (read full reviews)
Overall Rating:5 out of 5 stars.
"My car was running rough Thought I'd give this a go before biting the bullet and stripping bits off Simple to use and VERY satisfactory result Will buy more to use on the other cars within the family"... (read full reviews)
Overall Rating:5 out of 5 stars.
"Have added a full dose to the tank and I can see a bit of improvement in fuel consumption (about 3MPG maybe). Engine runs as well as before (which should read rattly, as it's only a 3 cyl 1L so"... (read full reviews)
Overall Rating:5 out of 5 stars.
"I have used this on a few cars over the years and it makes a big difference to the mpg and the engine does sound alot healthier. I put this into a nearly empty tank and then fill up using shell v"... (read full reviews)
Overall Rating:5 out of 5 stars.
"I would recommand this product to all my friends and family."... (read full reviews)
Overall Rating:5 out of 5 stars.
"I bought this over a year ago as it was on offer and it worked a treat. My engine was clogging up and chugging a lot which meant id to drop the gears and blow out a load of smoke. I used this"... (read full reviews)
Overall Rating:5 out of 5 stars.
"Had 750ml put into my Rover 2ltr Turbo Diesel Engine and went on a 250 miles road trip and it runs a lot quieter and smoother, starts better in the mornings. Would definitely recomend Slick 50. Also"... (read full reviews)
Overall Rating:5 out of 5 stars.
"After having so many problems with the Diesel Particulate Filter on my Ford Focus, I had that and the EGR valve removed completely and the ECU remapped. My only concern was the increase in emissions"... (read full reviews)
Overall Rating:5 out of 5 stars.
"I have use this product for many years - good for cleaning fuel systems / injectors etc.. Always good to use before an MOT to clean the fuel system. Simple to use - just pour into your fuel tank when"... (read full reviews)
Overall Rating:5 out of 5 stars.
"My emissions were sky high after my NCT (for example the accepted rate of CO is 0.3% and mine was over 2%!!) I put both bottles into my tank and topped it up to full with clean unleaded from Topaz the"... (read full reviews)
Overall Rating:5 out of 5 stars.
"used this in my 1998 TDU Passat and instantly i can see the difference its faster and smother on accleration and there way less smoke i will buy this from now on cant get over the difference."... (read full reviews)
Overall Rating:5 out of 5 stars.
"Engine warning light came on in my Picasso and the engine was running a bit lumpy. A shot of this in a full tank and within about 30 miles the engine started to run ok and the engine warning light"... (read full reviews)
Overall Rating:5 out of 5 stars.
"I bought this engine treat (wynns formula gold) for my audi 1600 cc petrol.before this product ,a full tank petrol (53 litres without reserve)gave me between 285-295 miles only .But after using this"... (read full reviews)
Overall Rating:4.9 out of 5 stars.
"Cleared warning light on catalyst performance and has improved power and speed. Seems worth a try as a first resort in case of troubles !"... (read full reviews)
Overall Rating:4.9 out of 5 stars.
"Have bought this product for the last three of my cars. It is excellent at reducing friction and can be used in the petrol to lubricate the upper cyliders. Change the oil and put the required amount"... (read full reviews)
Overall Rating:4.9 out of 5 stars.
"Car began showing symptoms of fuel starvation/blocked injector. Dosed it with one bottle of Wynn's Injector Cleaner just before a 200 mile drive. Very rough throughout the journey as the blockage"... (read full reviews)
Overall Rating:4.8 out of 5 stars.
"molyslip was first demonstrated to me in 1957 I have used it ever since in all my cars. I was shown that after the addition of molyslip to engine oil and running the engine for a period then draining"... (read full reviews)
Overall Rating:4.8 out of 5 stars.
"Great solvent which quickly and effectively 'de-gummed' the blocked carb on my lawnmower. The fine tube which fits into the spray cap makes it really easy to high pressure blast those very narrow"... (read full reviews)
Overall Rating:4.8 out of 5 stars.
"I use this on a regular basis and keeps engines running great. It does make for easier starting and less smoke. I found that when I buy another vehicle I use this in each tank full of fuel for three"... (read full reviews)
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