Engine oil Castrol or ZIC

I talked with my friend who works in skoda dealership as mechanic, he told that castrol edge is the best motor oil for these mk 3 models because it comes from factory with it. They have run tests on Petrol and diesel engines and best for these engines is edge, because it's made for these engines.

Castrol Edge LL.

I personally use Castrol in all my vehicles, and if I buy used cars I preform an oil flush and start using castrol immediately.

In my 2020 A6 I had aral oil and it consumed 1l of oil in 15k km. Then I used castrol LL and now it does not consume a drop at all.

I like to use Castrol Edge Racing with the 278cc HPE2, made a big difference to running temps, top speed and effiviency.

I go for Castrol for BMW. Somehow this machine really likes it.

I’ve been using castrol edge euro 0w-40 for years and loved it. Seems to be discontinued, can’t find it anymore. That sucks, moving to mobil 1 euro 0w-40.

I run Castrol Power 1 in my KTM 350 4T. I'm just past 800 hrs with \~25hr oil changes. It meets the JASO specs my bike requires. I have not changed a clutch ever since I bought it at 280 hrs. I had the motor apart at 500hrs and the Nicasil bore coating was \*perfect\*. That was the last time I swapped out the piston.

I personally have used the RN17FE 0W-20 (Renault branded Castrol GTX bottles) for 10k km after the innitial oil that was filled in the factory (I don’t know which one was filled in factory). I haven’t noticed any better fuel economy but that can be tough to determine because I drove the car mainly through the winter and did more shorter trips than the original factory first fill oil that I drove with during spring and summer.

I recently changed the oil in a diesel Passat (150,000 kms) which had Castrol Edge put in 12,000 kms ago during the last service by a VW dealer. I have changed many oils in VW diesels and found the Castrol oil that came out to be the dirtiest, sticky, staining and sort of gritty oil ever.