TooSlick :
Surely this post should be under the Industrial stream as no DD Series 60 engine could be deemed a Light Duty Diesel
I believe you may be refering to an outdated set of figures - they are sadly inappropriate, and may have been updated by a later version of 7SE more in line with CH-4 and CI-4 oil use
I will quote from 7SE270 9902 which is now also old. These are not condemnation limits but - single sample guidance limits. These have been also been superceded by various Service Bulletins, for instance the LSB01-99 referred to below
1 - Viscosity as stated in your post @ 40C;
% Max increase 40% or Max decrease 15%
Note:LSB01-99 = Viscosity @100C = 20cSt
2 - Soot to E1131 or LEM;
1.5%
3.0% when using a CH-4 oil
Note: ## 3.5%
3 - TBN;
a) D4739 - 1
b) D2896 - 2
Note:LSB01-99 = 60% reduction/ 3 min TBN
4 - Water;
0.3% volume
5 - Fuel
2.5% volume
5 - Antifreeze,
Negligible
6 - Iron
150ppm and confirmed in LSB01-99
7 - Copper
30ppm
## 3.5% - Mobil allow a soot level of at least 3.5% when using Delvac 1 5w-40
A CH-4 oil was made mandatory for all 1999 series engines
Prior to DDEC4 ECM series engines the Series 60 engine was not too "fussy" on oil quality. The DDEC4 ECM which has a real time clock was installed along with various engine modifications ( piston/ring area and etc ) that caused extreme high temperature sludging if Note: This was quite common in fleets that already had DDEC 1,2,and 3 engines in use and were using a
I never experienced this problem as I have always used oils like Castrol RX Super, Enduro LD a semi-synthetic, and Delvac 1 and carrying out UOAs to set my OCIs and monitor the engines
Detroit Diesel MTU Australia have always been very conservative regarding OCIs etc - much more so than in NA. They disregarded 7se270 9902 which allow 24kkms and mandated 15kkms.
I have been using 100kkms as the OCI with Delvac 1 for the last four years and averaging about 90kkms over all engines
Regards
Doug
[ February 15, 2004, 04:15 AM: Message edited by: Doug Hillary ]