“Well with all things in the world, you hope the Quality of product lives up to the hype /advertising blurb by manufaturers- shy of ripping the engine open I will not know!! BUT, we- i am in the automotive industry- noted that engines using Fuchs products (with regular oil/filter changes etc) are in great order inside the engines we deal with.
So as this is a Fuchs/Ford tested ( i am guessing ford has tested it on dyno simulations) product, it should be keeping our little fiesta engines insides in great order.
A 'great touch' is the added 'kit', Gloves, tissues, and a simple but VERY effective cardbourd funnel!! While I have plastic funnels galore,they flap aroung in the large filler holes on engines- this simple card funnel was dare i say 'way better'!!!
lastly, my us8a 5 litre oil tubs have great sealing covers on their neck, one needs a knive usually to break the strong seal- the 1 ltre oil tubs had a nifty (new to me) spiral form pull tear tab that made opening the tubs a dream!”