These engines need 40w either 5w40 or 0w40.. I ran 0w40 Mobil 1 syn euro formula for the 60k miles I had my GTI, it's cheap and readily available in 5qt at Walmart, thinner on cold start up it when hot is still 40w, it's also the factory recommended by Porsche
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Mobil 1 ESP 5W30 and Delvac 5W40 are right next to each other at Walmart and usually within a dollar of each other in price. Our 2 cars use Mobil 1 ESP and my diesel Jeep uses Delvac 5W40. Both are good oils, so I think it will just be your personal preference. Blackstone tests will tell you the story on your oil and intervals better than Reddit.
Mobil 1 Turbo Diesel Truck 5W-40 in an ALH since new. 10K OCI, engine with 280K running like new.
Mobil 1 ESP 5W40
Mobil1 is great oil and what I personally use.
One of my cars has 240,000 miles and burns 1/2 a quart in 10,000 miles using Mobile 1 5W-20
10W-40 full synthetic Mobil 1 fixed that on my 05 Rio with the B6 Mazda engine. The sound goes away shortly after an oil change and it stays away for about 2 or 3,000 mi until the oil breaks down and it starts to make the noise again.
I use 5W-30 Mobil 1 synthetic and the 10,000 mile Mobil1 filter from Walmart. I bought my 2009 TSX nearly 4 years ago with 113,000. It now has 178,950. I'm lucky it doesn't burn any oil, I never have to add oil between changes.
I have switched back and forth between Toyota 0W-16 with a Toyota oil filter and Mobil 1 0W-16 with a Mobil 1 oil filter. I have noticed no difference in performance, fuel mileage or metal wear between the two oils.
I replaced the gear oil in my 99 6-speed w/LSD using Mobil Delvac 75w90 about 300 miles ago and it seems notchier than before, especially before it’s warmed up.
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