Engine oil Castrol or Eneos

In the desert, I use [Castrol Euro 5W-40] - it's easy to find everywhere and pretty cheap. It's technically only an API SN, but the actual test results seem to indicate it exceeds SN+ requirements in most every metric that matters

Absolutely always use mazda filter and the owners manual says use Castrol which the three local Mazda dealers use this I also go with it. Over 60k miles with oil changes anywhere between 3k-6k and still runs great.

I use Castrol GTX 20W-50, same as what the manual calls for. I know the oils changed since then but the previous owner didn't care for the car properly so I feel like the detergents are necessary.

Everything I've found for my 2008 Rabbit 2.5L engine specifies Euro 5W/40. Although you can find it in several brands, the best price I've found is the Castrol Edge Euro 5W/40 at Walmart for the 5-quart jug.

FWIW: I live in Maryland and use Castrol Syntec 5w-40 in my 2012 JSW 2.5. I usually buy the filter and plug/washer from the dealer because they have the best price and I don't have to wait or pay for shipping.

I use castrol in my 2014 cx5.

I use Castrol Edge European Formula 0W40 for all of my VWs (2005 Phaeton, 2014 CC 3.6, 2017 Jetta SE and now a brand new 2019 Alltrack SE): I buy it from Amazon, for $ 24.47 for 5 qts. The oil has a "European Formula" label on the front and specifically states "VW 505. 00 and 502. 00 " on the back, and is made in Brussels, Belgium.

I got some Castrol Edge Titanium FST 0W40 which is VW502 00 approved. I decided to try this oil as their name is on the oil filler cap, as in the past with other cars I always used Mobil 1 0W40.

Castrol Edge European formula 5W-30. Closest thing to group IV you can easily find in the states.

I run 5w40 syntec and I eat about 1/2-3/4 oil every 5,000 miles. It will eat it more if I drive it really hard.