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The 997.2 is DFI. The DI40 is formulated specifically to eliminate (well, reduce) LSPI in DFI cars. DT40 is for the 997.1.
Second choice is kind of a mix, depending on who you talk to!!!
I should have known that because of my past friendships.
Here's a nugget from the past...Lake Speed, Jr.s father, Lake Speed and I graduated together in 1966 as seniors at Murrah High in Jackson, MS, just before Lake got nationally recognized in racing. At the time (1965-1966), He was already winning championships in the go-cart world all over the globe before moving to the Carolinas. Like Father like Son!
Pete you're a knowledgeable enthusiast, but I will disagree with you here. I use Liquimoly Leichtlauf Hi-Tec and have metal wear numbers in the low single digits. Take a look at my last post in this thread. Granted I also use Ceratec. I just changed my oil last weekend and switched to LM Molygen since it has the moly formulated into it. I still used Ceratec since they work differently. I sent my last sample in. Unfortunately I almost forgot to collect it and got the end of the stream. I indicated that on the sample. Not sure how that will play out.
For the OP, the driven oil is fantastic. It also has a fantastic price! Take a look at LM Molygen. It's a similar formulation but less costly. It's a new formula for LM, however, so I don't think there are UOA's posted for that oil (yet).
Look at tapcon's numbers in post #695 for example (picking a random recent DI40 report posted here) and compare them to yours in post #500 (what you are referring to I believe). The LM is ~2-3x higher wear metals.... Your aluminum is 4-5ppm and Iron 6-7ppm vs tapcon's 2 ppm for both.
Or… (i) you idled less and (ii) got the engine oil hot enough to evaporate H2O and gas.
There are an infinite number of factors that were not controlled for. It could be winter blend fuel contributing too, I can think of a bunch of things. But when I switched to DI40 I did the exact same test at the exact same day of the year one year later with everything as close to the same as you could be, and my fuel dilution dropped almost in half.
Originally Posted by Petza914
Only thing I don't like in that report is the increased Copper and not sure where that would be coming from. Everything else looks great.
Only thing I don't like in that report is the increased Copper and not sure where that would be coming from. Everything else looks great.
Says copper if for bushings and bearings. I wonder what would be the cause? Sounds scary...bearings. What would be a number to be concerned about?
From the legend:
"an alloy combined with tin to make bronze, which is a common material used to make bushings. Also, copper is used to make Babbitt bearings.
Typically indicates bearing, bushing or distributor gear wear. Check filter for wear debris."
There are an infinite number of factors that were not controlled for. It could be winter blend fuel contributing too, I can think of a bunch of things. But when I switched to DI40 I did the exact same test at the exact same day of the year one year later with everything as close to the same as you could be, and my fuel dilution dropped almost in half.
I am assuming that is from the bearings?
Unusual to see bearing wear with Driven oil, but Copper is probably bearing shims or bearing surface material.