02-23-2014, 06:41 AM
I'm a new guy so I have been reading the Detroit Series manuals, here are a couple of paragraphs from the manual.
"Monograde oils should not
be used in Series 60 engines, regardless of API service classification. Monograde oils gel at lower ambient temperatures, reducing lubricant flow, and do not provide adequate lubricity at higher engine operating temperatures resulting in severe engine damage."
"The oils must be API CJ-4 that have demonstrated field performance in Detroit Diesel engines. These oils must possess a High Temperature / High Shear (HT/HS) of 3.7 minimum. For further information, refer to publication Engine Requirements – Lubricating Oil, Fuel and Filters, 7SE270, available from authorized Detroit Diesel distributors."
"Synthetic Oils
Synthetic oils may be used in Detroit Diesel engines, provided they are API licensed and meet the performance and chemical requirements of non-synthetic oils outlined in this publication. Synthetic oils offer improved low-temperature flow properties and high-temperature oxidation resistance. However,
they are generally more costly than non-synthetic oils."
As long as the oil meets the API service rating you may use it without voiding the manufacturers warranty. In my humble opinion, as far as price, I can't think of a better place to spend a little more to ensure my engine is getting the best lubricant designed to protect the engine from wear. I do take regular oil samples and let the lab tell me how the oil is performing.....it may be my aircraft background that drives me to this technology because today's jet engines are operated this way.
"Monograde oils should not
be used in Series 60 engines, regardless of API service classification. Monograde oils gel at lower ambient temperatures, reducing lubricant flow, and do not provide adequate lubricity at higher engine operating temperatures resulting in severe engine damage."
"The oils must be API CJ-4 that have demonstrated field performance in Detroit Diesel engines. These oils must possess a High Temperature / High Shear (HT/HS) of 3.7 minimum. For further information, refer to publication Engine Requirements – Lubricating Oil, Fuel and Filters, 7SE270, available from authorized Detroit Diesel distributors."
"Synthetic Oils
Synthetic oils may be used in Detroit Diesel engines, provided they are API licensed and meet the performance and chemical requirements of non-synthetic oils outlined in this publication. Synthetic oils offer improved low-temperature flow properties and high-temperature oxidation resistance. However,
they are generally more costly than non-synthetic oils."
As long as the oil meets the API service rating you may use it without voiding the manufacturers warranty. In my humble opinion, as far as price, I can't think of a better place to spend a little more to ensure my engine is getting the best lubricant designed to protect the engine from wear. I do take regular oil samples and let the lab tell me how the oil is performing.....it may be my aircraft background that drives me to this technology because today's jet engines are operated this way.
Bob Miller
Previous owner of #390