2003 Porsche Carrera C2 coupe, 108K miles, daily driver 400+ miles a week, mostly highway, some traffic. Currently doing a 4K OCI using Liqui Moly Leichtlauf High Tech 5w-40 & Liqui Moly Ceratec added. Done about 6 oil changes since I purchased the car 1.5 years ago w/82K on it. Doesn't use a drop of oil.
Recently someone posted a virgin UOA of my oil and the numbers were not impressive, especially considering I drive my Porsche pretty hard, no track sessions or auto cross.
So I decided to take a look at other oils with better numbers.
There is a famous engine builder (Flat 6 Innovations) that specializes in my engine and they swear by Driven DT-40 and a 5K OCI for street use. Flat 6 worked with Joe Gibbs to come up the oil originally and as such is formulated exactly for my engine.
I haven't been able to find a virgin UOA of DT-40, but according to Flat 6, the numbers are very impressive and just what I need.
I'm pretty certain I'll change to DT-40 and go with a 4K OCI, because I do drive it pretty hard, even though street only.
Flat 6 says that when you change to DT-40 you need to run some JG BR break in oil for a bit, then put the DT-40 in.
Here's an exact quote from Jake Raby, the owner/creator of Flat 6: "I would buy a case of JG BR break in oil to use as a 100 mile flush before changing oil. This lessens cross pollination from one vastly different base oil to another and it does make a huge difference on the first two oil services after switching to DT40. I know this. Here I assemble engines with JGR assembly lube and break them in on JGR BR break in oil, then use DT40 from that point forward."
That quote seems a bit of an exaggeration, but I'm not the oil expert, that's why I'm posting this here to see what the guru's of BITOG have to say.
Bottom line - I'm scared to run a break-in oil in my engine with 108K miles on it!
What say you guys? Should I run break-in oil for 100 miles, or just change to DT-40?
Side question - if yes on the JG break-in oil, which should I use, there are three types, I'm thinking the 10w-40, ZDDP enhanced:
BR Break-In, Mineral, 15W50
BR Break-In, Mineral, 10W40, ZDDP Enhanced
Racing Break-In BR, Mineral, 5W30
Recently someone posted a virgin UOA of my oil and the numbers were not impressive, especially considering I drive my Porsche pretty hard, no track sessions or auto cross.
So I decided to take a look at other oils with better numbers.
There is a famous engine builder (Flat 6 Innovations) that specializes in my engine and they swear by Driven DT-40 and a 5K OCI for street use. Flat 6 worked with Joe Gibbs to come up the oil originally and as such is formulated exactly for my engine.
I haven't been able to find a virgin UOA of DT-40, but according to Flat 6, the numbers are very impressive and just what I need.
I'm pretty certain I'll change to DT-40 and go with a 4K OCI, because I do drive it pretty hard, even though street only.
Flat 6 says that when you change to DT-40 you need to run some JG BR break in oil for a bit, then put the DT-40 in.
Here's an exact quote from Jake Raby, the owner/creator of Flat 6: "I would buy a case of JG BR break in oil to use as a 100 mile flush before changing oil. This lessens cross pollination from one vastly different base oil to another and it does make a huge difference on the first two oil services after switching to DT40. I know this. Here I assemble engines with JGR assembly lube and break them in on JGR BR break in oil, then use DT40 from that point forward."
That quote seems a bit of an exaggeration, but I'm not the oil expert, that's why I'm posting this here to see what the guru's of BITOG have to say.
Bottom line - I'm scared to run a break-in oil in my engine with 108K miles on it!
What say you guys? Should I run break-in oil for 100 miles, or just change to DT-40?
Side question - if yes on the JG break-in oil, which should I use, there are three types, I'm thinking the 10w-40, ZDDP enhanced:
BR Break-In, Mineral, 15W50
BR Break-In, Mineral, 10W40, ZDDP Enhanced
Racing Break-In BR, Mineral, 5W30