Okay guys, I'm going to put the Red Line with a Wix filter to test. My '13 Laramie has just short of 100k miles. I have not owned since new, and Dodge dealer in Az. said it's "just the Hemi tick". I love this truck, and am willing to pay 3x for better oil, go 1/2 the recommended oil change distance, and do it myself if it makes the difference. Stay tuned....
make sure wix XP, has to be XP.
So there is good news, Redline is a long interval oil because of high tbn and it simply does not shear, the two things that is the reason to change your oil. Might I suggest a spun microglass filter, read the filter thread in my sig, royal purple, amsoil ea, wix xp, fram ultra, and there is a purolater option if those don't work for you, see jb1 member in filter thread.
So a 10k mile interval is pretty safe with redline, you may opt for a used oil analysis on the second run with tbn if it works for you, if not then never mind. You can go as high as 18k miles, the uoa would back that up as it reads base number, blackstone will recommend an interval based in science. It depends on how engines is running, and how the miles are, mostly city miles I would do no more than 10k miles and verify with uoa, if you have a lot of freeway miles, oil will last longer.
Kind of important, do me a favor and let me know how it sounds exactly after you change the oil, was there any change at all? If there was literally no change, chances are it's exhaust bolts, you need to take a better look that them.
If you haven't bought it yet, price check through Nick at got exhaust, it's about 12 bucks a qrt shipped to your door with him. Also, for sure get 5w30 with a truck with that mileage. There is a small risk with high mileage oil and redline, sometimes it cleans away junk and it gets louder before it gets better. The "film" needs to repopulate, this has happened to three trucks over the years, everyone over 75k miles. Hit or miss if this happens, but the film can still repopulate.
Now, very important many trucks it takes 500 to 1500 miles or more to go silent, this is the science of the formula. Sometimes, it goes quiet right away, sometimes not. The first time I used it I thought I wasted good money, 500 miles later it was silent. Don't be discouraged and be patient, talk to guys in syn thread, most of us had the same result. Ask questions if you have any in syn thread, many of the guys who killed their ticks stuck around there.
