Uh Oh....OIL THREAD ALERT!!!
Reasons WHY you should run diesel API CJ-4 oil in your 103/104 if you are unaware..
Oil Alert For Older Cars | Eric Peters Autos
Labs done by: http://www.blackstone-labs.com/
How to read the lab tests: http://www.blackstone-labs.com/report-explanation.php
--> click gas/diesel.
Calcium and elements below are additives. More the better.
Universal Averages I confirmed from blackstone are the M103 engine -- you can see most oils they sample have LESS additives+detergents than what mine is showing -- more than likely because anybody else uses non-diesel oils without these important additives.
Its time to change the oil on the wagon. This is the first time I have put Synthetic in her (the Rotella-T6). I did it after I resealed my front timing cover and no new leaks at all which is great....so there is a warning for those who are considering changing to synthetic...if you already have leaks, or have a leak that is close, its going to leak worse.
I am going to do the oil change with it, run for 6k mi then send it in for Analysis and report back in 6 months (yeh sorry for the uplifting thread title lol...) I just want to track everything.
Once I get my Rotella-T6 sample back, I will post it up so we can compare readings against both the Rotella-T non-synthetic cousin and Delo 400 non-synthetic....then once I have 6k on the Mobil1 synthetic, its gotta face off all 3 prior samples to find who is superior
So without more adue:
Here is the faceoff once I get all samples back:
Here are my prior samples from standard 15-40 Rotella-T and 15-40 Delo 400.
You can see so far the Delo 400 seems a better buy than Rotella-T due to more additives...but who knows "what" that means in terms of wear, but I'll take more additives for peace of mind
Note: The higher metal wear shown below is probably due to the fact I have the original pre-chilled cam + rockers which are known to wear fast. Pre 89's -- you have them too.
Rotella-T NON-Synthetic 15-40
Delo 400 NON-Synthetic 15-40
Rotella-T6 5-40 Synthetic COMING SOON
Mobil1 Turbo Diesel Truck 5-40 Synthetic COMING SOON