Below I'm going to post samples from two separate semi trucks. The overall goal is extended oil changes, learning about condition of the older motor, and developing a baseline before installing amsoil bypass, and finding out how and what oil works for our application.
Both trucks run the same short 20mi route , we run the trucks very hard in extremely dusty conditions (paper ash).
The first truck has mystik 15-50 with 10k miles on the oil,and 1,035,000 on the detroit 14l non egr engine and 100k on new rod and main bearings,and oil pump.
The,2nd truck has 208k on the engine (factory reman glider) detroit 12.7l and has 37k miles on rotella t6 syn at time of sample.
Mystic 15-50 10k
Alum 3
Chrom 1
Iron 13
Copper 1
Lead 1
Tin 2
Moly 41
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 2
Boron 5
Silicon 3
Sodium 4
Calcium 1048
Magnesium,748
Phosphorus 1052
Zinc 1253
Barium 0
Sus visc 86.3 mystik viscid lube
Flashpoint 445
Fuel Antifreeze 0
Water 0
Insoluble .3%
Tbn. 6.1
25k mystik /38 k rotella
Alum. 2 4
Chromium.3 3
Iron. 52 75
Copper. 2 3
Lead. 11 15
Tin. 3 2
Moly. 33 48
Nickel. 1
Manganese. 1
Silver. 0
Titanium. 0
Potassium. 24 7
Boron. 11
Silicon. 6 4
Sodium. 8 8
Calcium. 785
Magnesium. 815
Phos. 725
Zinc. 967
Barium. 0
Sus visc lucas96 84.9
Flashpoint. 400
Fuel. 1.0
Antifreeze. 0
Water. 0
Insolubles. .4
Tbn. 2.5
Those samples are from 2 different labs in 2 different oils on consecutive oc's. Blackstones notes said tbn was fine but recommended changing oil bc of the lead. If you notice the 2nd sample went 30% more miles with 30% more iron and lead. On the 37k mile t6 I changed the filters at 19k,31k and 37k sample. Topped off with 1.5 -2 gallons each filter swap. I have not changed it yet , what do yall think, I'm trying to learn what I can safely extend my oci to.
One final question, amsoil schaeffer or stick with the t6
Thanks ,yall are a wealth of info!!!!!!!
Both trucks run the same short 20mi route , we run the trucks very hard in extremely dusty conditions (paper ash).
The first truck has mystik 15-50 with 10k miles on the oil,and 1,035,000 on the detroit 14l non egr engine and 100k on new rod and main bearings,and oil pump.
The,2nd truck has 208k on the engine (factory reman glider) detroit 12.7l and has 37k miles on rotella t6 syn at time of sample.
Mystic 15-50 10k
Alum 3
Chrom 1
Iron 13
Copper 1
Lead 1
Tin 2
Moly 41
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 2
Boron 5
Silicon 3
Sodium 4
Calcium 1048
Magnesium,748
Phosphorus 1052
Zinc 1253
Barium 0
Sus visc 86.3 mystik viscid lube
Flashpoint 445
Fuel Antifreeze 0
Water 0
Insoluble .3%
Tbn. 6.1
25k mystik /38 k rotella
Alum. 2 4
Chromium.3 3
Iron. 52 75
Copper. 2 3
Lead. 11 15
Tin. 3 2
Moly. 33 48
Nickel. 1
Manganese. 1
Silver. 0
Titanium. 0
Potassium. 24 7
Boron. 11
Silicon. 6 4
Sodium. 8 8
Calcium. 785
Magnesium. 815
Phos. 725
Zinc. 967
Barium. 0
Sus visc lucas96 84.9
Flashpoint. 400
Fuel. 1.0
Antifreeze. 0
Water. 0
Insolubles. .4
Tbn. 2.5
Those samples are from 2 different labs in 2 different oils on consecutive oc's. Blackstones notes said tbn was fine but recommended changing oil bc of the lead. If you notice the 2nd sample went 30% more miles with 30% more iron and lead. On the 37k mile t6 I changed the filters at 19k,31k and 37k sample. Topped off with 1.5 -2 gallons each filter swap. I have not changed it yet , what do yall think, I'm trying to learn what I can safely extend my oci to.
One final question, amsoil schaeffer or stick with the t6
Thanks ,yall are a wealth of info!!!!!!!