Engine oil Castrol or IDEMITSU

I’ve moved to Castrol edge for my 9th gen.

Castrol edge and OEM filter for turbo.

Regarding brands, if you want to stick with factory oil without dealer price, Idemitsu is the brand to get. I emailed Mazda corporate and they said Idemitsu is the OEM for their oil.

I’ve always used 5W-30 Castrol Edge Titanium, available at Wal Mart. My Blackstone report came back good a long time ago on it.

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).

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.

Had my gle350d 4matic oil change garage used Oil Designed for Ford cars believe it was A5 castrol

Nearly 3000miles later engine rattled. On stripdown found shell on crankshaft had welded to crankshaft. Eng report it was shell  slippage.