I've tried various combinations that include the mix of m1 5-40 with 5-50 but have now for many years kept it simpler w/ Mobil 1 5-50 every five thousand miles. It purrs as one would expect from a 195,000 mile 996 Turbo.
My Saab (2003 9-5 Arc Wagon 3.0 turbo) has a sticker that says Mobil 1
To be honest, the mobil 1 ESP 0w-20 is a fantastic oil and meets those specs and is at walmart for $8/qt
My oil report on 0w30 mobil1 esp looked good. I'll keep using it. Mix of track and daily duty.
Seeing good results, lower heating, smoother functioning with Mobil Super Moto 15W-50 Synthetic Technology Engine Oil.
I was riding in the Himalayas where low-gear, high-acceleration could not be avoided and decided to try this. Noticed better performance, lower heating and decisively moved away from RE's semi-synthetic.
I wouldn't limit yourself to VW brand oil only if another "approved" oil is cheaper. VW has a document listing which oils meet their spec. I use the MOBIL 1 Esp x2 (it's on the list) since the 5 quart bottles are usually cheap from Walmart.com.
I’ve ran mobil1 5w30 for a few years now with oem filter on my 1990
I use 10w40 also from Mobil 1 high mileage. A lot of our engines will have a tick on start up or once hot, if so with your Motul, switch brands to another top tier on next oil change and see if your engine likes that brand more.
I wouldn't consider M1 4T to be the highest quality oil. It's a pretty standard Group III/IV synth blend with a motorcycle on the label.
If you run Mobil1, yes you will needs lots of extra oil... Mobil 1 doesn’t make the grade.
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