Hi Very rarely write reviews however on this occasion it’s different .
After looking at many additives and cleaners I came across this product .
What first caught my attention was Australian owned and designed 👍
Now I am very suspicious of putting stuff into cars that have millions of dollars invested in R&D from factory and in particular Toyota .
I have a 2.8 diesel Toyota with 50,000 kms on odometer .
I was looking to see what options were to protect my investment especially with all the noise of fuel crisis and government allowing sulphur changes for diesel .
I purchased this product from reviews posted and still with well it’s $ 40 will see if it works as claimed and check with my scanner if any adverse or success changes to car . Well it works simply does as it states car is quieter and smoother response .
My car is serviced professionally and on time and fuel economy sits at 8.9 lts per 100 km
After one 10 ml additive the results were immediate on my feel . I did realtime testing thinking a placebo effect, but no after adding the responsive additive consumption went down to 8.4 lts per 100 km , hey even the original 8.9 lt per 100 km I am happy .
In my opinion the product works as stated and now will do my other family member cars . Will do more investigating on there fuel watch alarm product .
Perhaps I can be a influencer they can loan me one see if that works 🤷‍♂️

Works well

I have been using this for many years. That’s why I keep buying it

Good communication, extremely fast shipping , great price

After an unexpected, and expensive misfueling episode on our 2017 Prado, a friend recommended this product. It arrived promptly, and was very easy to install with the enclosed instructions. It is a well engineered, quality bit of kit, and works exactly as promised. The four catches need to be engaged with the correct (diesel) nozzle for the fill flap to open. Definitely an investment that WILL save you both time and money.

Awesome

Ive fitted it , had a bit of job trying to get the drill in position for mounting bracket holes , made a template to give hole locations from front side and fitted bigger bolts for better strength., theones supplied looked to small, I. plumbed it up also added a new factory filter same time ,looks neat and works , need to hook up electrics for sensor now , looks good quality.

I love knowing the fuel pump is nown

Prado was idling rough at 8 & 9. So put 19 to 20ml of your fuel additive into the Prado's 150 litre tanks and at approximately the 3km mark the engine started sounding a lot more smoother, and at the end of the 8k drive I let it idle for a few minutes and the engine was purring, sounding so much more smoother, and it's idling was smack on 7! So am very pleased!
Absolutely brilliant additive! Huge thank you to Responsive Engineering!

Excellent product, easy to fit and to use on our Prado 250

GREAT PRODUCT 👍

fantastic product good insurance .fitted one 2 both diesel cars

Very quick

I’m impressed how 10ml can make such a difference on diesel RAV4 from usually 5.8 down to 4,9 l/100 unbelievable and so much smoother and I’m usually very sceptical about snake oil

Easy to fit and works well