Engine oil Castrol or FUCHS

4.5 L is the Ideal for Mazda 6 2.5 non turbo, I'm from the same country as you. I'm using fuchs titan 5w30 for two years and I recommend you do the same, I noticed quieter engine.

Preferred Castrol edge 0w-20 during the warranty period and 5w-30 after the warranty period. The engine is quieter with 5w-30.

The ss will have Castrol that they use for big bikes it’s better than prolube and Motul 7100 in my experience.

I just use Castrol magnatec 10w40 here in the Netherlands in my m20.

The closest I found was Castrol? Long life 507 which was £40 for 5L from Amazon, but I had to buy the stuff direct from VW as was pushed for time for my oil change (with a friend).

Although even if my Manufacturer recommends 10w30, I'll still go for that Castrol Power1Ultimate 10w40. It's such a Buttery Smooth Oil.. that's the best gift you can ever give to your >200cc motorcycle.

Castrol LL01 5w30 is $25 for 5 quarts at Walmart. Will work for your car

I've been running Castrol GTX High Mileage in my Honda for over 140,000 miles. It has 262,000 miles on it now, and I have always done 10,000 mile oil changes over the 235,000 miles I've put on it.

I'm at 308k miles and use cheap Castrol engine oil, house brand transmission fluid (the correct kind though), and the cheapest coolant I can find.

Castrol sucks