Engine/Transmission (1998.5 - 2002) oil analysis on dino oil

[fmj]

Here is a sample of Mobile 1300 super 15w40 cj oil. The cj oil is on sample 11 and has 7000 miles on it, with about 90% of it doing towing of 5er and enclosed car hauler. I just switched from synthetic which are all previous samples using Amsoil HDD 15w40. You'll note that there are some "spikes" in samples 9 and 10. This was caused from sucking in the environment when I blew intake boots off in the middle of east bf nowhere. I was watching lead to see if it kept going up, but it returned to normal after change. It wasn't the oil but the event that changed things. Anyway the switch to dino was only because I'm not putting on miles like I used to and feel better changing oil out more frequently at the 7 to 8k range.