oil usage and rebuilt engine

Well, Bogi, you were right. The oil was changed after the rebuild and the dyno test, and then we changed it again at 8,000 miles. Used a little oil the first fill up, but it never made it past the "add" mark now at about 6,500 past the oil change. Just sat at that level for the last three fill ups.

Whew.....!

 

I would say 750-800k miles..

 

I must have a fluke. I have a factory reman DDEC IV 12.7 60. It has about 488,000 miles on the motor now. It uses about 1/2 gallon in 20,000 miles. I am using a syn blend 10w30 in it. It has never used more than about 1/2 gallon in 20,000 miles over it's entire life. I did the first oil change in it at 10,000 miles and have been doing 20,000 mile oil changes ever since.

 

No it's not normal. I have 400,000 on a cumapart rebuild and it uses a gallon a month.

 

Here is a group of samples from my factory remanned S60 with over 500,000 miles on it. The samples vertically (latest sample on top), the first two show results from using 10w30 the second two from using 15w40. The 10w30 is doing quite nicely, is holding TBN and viscosity better, and the latest sample shows lowest wear numbers. Not bad for a factory remanned motor with over 500,000 miles on it.