Engine oil Mannol 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.

I use Mannol 5w40 extreme or elite. Including an oil filter it means that my oil changes cost 25€. That's why I change the oil every 6k kilometers or so.

I've tried Castrol, Mannol, Eneos, Petronas, Fuchs, etc, and I've never had issues. Just make sure it's the correct specification code and viscosity, which for your car is PSA B71 2290 at 5W30.

Ich benutze in meinem BMW das Mannol Legend Extra 0W-30 und habe keinerlei Probleme. Der Vorbesitzer hat es auch schon benutzt und mir empfohlen, der war im übrigen leitender Mitarbeiter direkt im BMW Werk. Wechselintervall alle 15Tkm und es passt.

Mannol 20l Kanister auf eBay kaufen und zufrieden sein.

Have used it for a couple of years now (since 2021) - I believe in changing my oil often instead of buying a more expensive one. It has been working really well (BMW B58) with no issues at all.

I use it in my wife’s Fiat 500 and my mk7 Golf GTD(service every 5k miles). no issues at all.

Last service, I put 8.5L of Mannol 7908 in my e320 cdi. No issues so far

Mannol ist okay. Denke wenn man es regelmäßig wechselt, auch vor dem offiziellen Intervall, dann ist es nicht schlechter als Markenöl. Hab sogar damit besser Erfahrungen gemcaht als mit Liqui Moly, Castrol oder Shell helix.

I've just drained this from my car after 6700 miles. I'm not very impressed TBH. The car burnt about a litre in that time, it usually doesn't use half that