I use this on my 1.9 tdi highline passat 2001, it really does work a dream on older engines, reduced my black smoke and definitely made my car quite but biggest difference was driving on motorway, it really does make the car purrr and just hover beautifully, those reviews saying it made no difference it's more than likely because the car has a fault, if your car just needs general maintenance I cant recommend this product enough, if you car takes 4 litres of fuel put in an entire bottle of Lucas and 3 litres of castrol and bang, just a dream, if your going to try this I would recommend doing it at an oil and oil filter change and take for a drive you will instantly see results, its thick like honey when pouring it into the engine but once warm it moves like water getting oil to all the essential parts of the engine, for the price you seriously cant go wrong, iv used for the last 20 years on all my 5 previous cars, you wont regret itRead full review
Verified purchase: No
This product was recommended by a mechanic who had used this on a high performance car of which I have the same, I listened to the engine running and from that made my decision to use it in mine. All I can say is what a difference, not any different from cold start up but on a hot engine this is where I noticed the quiet start up. I'll see what it's like after its been used for a while. What more can I say but try it you won't be disappointed, just warm it up before pouring as it's like golden syrup .
Verified purchase: Yes | Condition: New
My wife's 56 reg mondeo 2.0tdci with 145k had an oil and filter change. I put 4.7 litres of fully synthetic 5w30 oil in the engine and 1 litre of this product to take it to just under max on the dipstick. The difference in quietness from cold start up is very surprising it sounds like a different engine. 5/5
Verified purchase: Yes | Condition: New
Great price, delivery on time, easy to use and works. Only issue my car had a foul smell after using (I purchased this along with Lucas stop leak - used stop leak before and it did not smell up my car), however it is slowly going away.
Verified purchase: Yes | Condition: New
I used it in my chevy engine, which was low in oil pressure. Now it runs at a constant 50 plus psi. Before ticking over at 5 psi Now 20 psi ticking over. I use it in all my vehicles and bikes..
Verified purchase: Yes | Condition: New
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