I have a 2010 Jetta TDI cup edition with the CJAA engine and the factory spec listed in the manual is 5W-40… On top of that the oil cap alone has Castrol on it\nSo Castrol 5W-40…. End of story…. I apologize if I sound condescending as I do not mean to and also recognize you may have purchased your vehicle second hand and it may have not come with a manual… But if the top of your 710 aka oil cap says Castrol on it and you truly have a CJAA engine then I guarantee you that Castrol 5W-40 is the proper oil regardless of location or climate Ps…. Anyone who claims to use or recommend anything else has also probably had massive engine problems or engine repairs an question why they had those issues Follow factory spec and maintenance recommendations…. I’m pushing 280k on my CJAA engine without a single issue
I run Motul 10/30 in my motor, helps the piston slap on cold start from the forged pistons.
I'm using motul 5w40 8100 x clean and it's great on my m54b22. I'm loosing little to no oil between changes
Looks fine to me, oil is relatively cheap, forget all the mileage crap and change it sooner if you are uncomfortable with the way it looks. I change my oil every 2000 miles, or whenever I go on or do heavy riding. I also switched over to Motul 7100 simply because it’s red and I can see exactly when it starts to discolor. A motorcycle mechanic told me the number one reason for engine failure is dirty oil so I started changing it frequently.
My 276k mile Xterra still trucks along with motul, every 3k miles.
changing the engine oil and using motuls 10w40 fixed it and getting mileage around 40.
I replaced the company oil to motul 10w40 engine oil, the changes weren't drastic but the milage and smoothness improved over the time
Done 2 oil changes so far and car has not used a drop of oil and I drive it pretty hard.
Any 5w30 that’s c2 or c3 rated will do, that said I’ve heard negative reviews around the quality of castrol so maybe spend just a little bit extra and get something mid range, I use Fuchs Titan GT1 FLEX C23 5w-30.
One time I had the oil bug bite (keera) and I decided to get the best oil. Castrol (I don't remember the number) but it was 340 AED for a gallon. I poured it into the engine and it felt good. That weekend took it for a desert drive and during one of the breaks, the entire oil just leaked out of the main seal. The oil was so good that the engine didn't have the tolerances to hold it back.
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