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    Best 5w40 for Twin Turbo Direct Injection V8

    I have an F10 generation BMW M5 with a Turbo Valvetronic Direct Injection (TVDI) 4.4L V8, that has two variable geometry turbochargers running BMW's Valvetronic and Direct Injection. I just changed to Ravenol VST 5w-40 (LL-01) and was suggested to consider Red Line's Euro 5w-40 with LL-04 rating...
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    UOA on BMW 0w-30 on BMW F10 M5 with S63 TVDI V8

    Attached is my first UOA on my new-to-me 2015 BMW M5 with 9,000 miles. The engine is a Turbo Valvetronic Direct Injection (TVDI,) twin scroll turbo 4.4L V8. The BMW dealer has apparently already performed three oil changes in the first 8,000 miles of the vehicle, so I think this vehicle has been...
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    Fascinating study on Ravenol 0w16 vs 5w30 in fleet of similar autos

    With all of the talk about 0w20 vs 5w30, I found this particular study very interesting. I recently came across Ravenol DXG 5w30 for my Enclave V6 GDI engine, (which looks very interesting with Group V PAO, 6.0 Noack, and 256°C flash point.) Admittedly I'm a little on the fence with the 0w20...
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    Okay to mix M1 Annual Protection with M1 Extended Protection?

    Same viscosity, 0w-20. I have 2 or 3 quarts leftover of 0w-20 AP from my last oil change and I decided to go with M1 EP 0w-20 for my next fill in large part because M1 won't give a rebate on the AP this rebate period. That and the fact when I'm only going to go out to 7,500 miles tops on the OCI...
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    New M1 0W-40 ESP dexos2

    So GM is now using Mobil1's new 0w-40 ESP with dexos2 rating for all new 2019 Corvette's, and as you will see from a reply from Tadge Juechtner, Corvette Chief Engineer, he's recommending that all C7 Corvette's from 2014 onward switch from the previous 5w-30 recommendation to this new 0w-40 ESP...
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    Go from 5w30 to 0w40 in Corvette Z06?

    I know this has been discussed before but I'm still uncertain on whether or I should change from 5w30 to M1 0w40 FS on my LS7 Corvette? GM seems pretty adamant in all of their literature to only use 5w30 DEXOS1, but I did notice in the '16 Cadillac CTS owner's manual that they say you can run a...
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    Mobil 1 EP 5w30 inferior wear protection?

    I've seen a couple of sites now who have tested the wear protection for Mobil 1 5w30 and Mobil 1 5w30 Extended Performance, and the numbers are quite different between the two: 118,000 PSI for the M1 5w30 and just 86,000 PSI for the Extended Performance variety. M1 promotes the EP product as...
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    Mobil1: Turbo Diesel Truck vs. Delvac 1 ESP?

    I like the Shell Rotella T6 that I believe FCA is using on the EcoDiesel's now, but I see two other oils that I could go with from Mobil 1 at WalMart: Mobil Delvac 1 ESP 5w40 & Mobil 1 Turbo Diesel Truck 5w40. Big difference in the tech specs (from M1's website.) The Delvac 1 ESP has the new...
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    Mobil1 5w30 Annual Protection?

    I noticed that WalMart started carrying these Mobil1 Extended Performance Oil Filters lately, but just last night I noticed that there is a new Mobil1 product that I have never even heard of, (or can't even find on their website:) Mobil1 5w30 Annual Protection. Label says "Ultimate Full...
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