On a quest to find "the best" oil for my Audi 2.0L engine with 36,000 miles, I've sent multiple virgin oil samples to Speediagnostix for analysis. The car was purchased new with regular oil changes at the dealer. The only UOA sample sent was when I jumped down this rabbit hole head first and started sending all these VOAs. Now it's almost become a hobby.
The first oil I sent was the Ravenol. Thinking it would be my new "forever" oil, and before getting the results, I changed to it. When the results came back, Lake Speed Jr said "PS - Is your engine turbocharged direct injection? If so, the Calcium and Sodium levels in this oil are not ideal for a turbo DI engine." My engine is both DI and turbocharged, so I wanted to get it out quickly and decided to go with the Motul. The VOA looks good, but since I won't go over 5,000 miles OCI, I thought maybe the Mobil 1 ESP X2 would be more than sufficient. The cost is almost 1/3 of the Motul and available at my local Walmart.
Then the GM 6.2L recall hit and I started doing some research. Turns out, in every country besides the US, this engine's oil spec is 5W40. Now I'm in a new rabbit hole looking for "the best" higher viscosity oil. Probably going with the Amsoil European 0W30 for now. Much higher HTHS.
I hope someone finds these VOAs useful. Thank you.
The first oil I sent was the Ravenol. Thinking it would be my new "forever" oil, and before getting the results, I changed to it. When the results came back, Lake Speed Jr said "PS - Is your engine turbocharged direct injection? If so, the Calcium and Sodium levels in this oil are not ideal for a turbo DI engine." My engine is both DI and turbocharged, so I wanted to get it out quickly and decided to go with the Motul. The VOA looks good, but since I won't go over 5,000 miles OCI, I thought maybe the Mobil 1 ESP X2 would be more than sufficient. The cost is almost 1/3 of the Motul and available at my local Walmart.
Then the GM 6.2L recall hit and I started doing some research. Turns out, in every country besides the US, this engine's oil spec is 5W40. Now I'm in a new rabbit hole looking for "the best" higher viscosity oil. Probably going with the Amsoil European 0W30 for now. Much higher HTHS.
I hope someone finds these VOAs useful. Thank you.
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