DEAR SIRS
I WOULD LIKE TO KNOW WHETHER MINERAL BASE DIESEL ENGINE OIL API CD/SF SAE 50 IS SUITABLE TO RUN UPTO 10000 KMS.
UP TO HOW MANY KMS IS SUITABLE TO RUN THIS OIL
rehan_affan@rediffmail.com

Raihan, that depends on a lot of factors. It depends on what type of engine you have, it depends on the climate you operate in, it depends on your driving style, it depends on what filter/filtering system, it depends on if your engine reaches full worktemperature, short or long trips and more.

DEAR SIRS
I WOULD LIKE TO KNOW WHETHER MINERAL BASE DIESEL ENGINE OIL API CD/SF SAE 50 IS SUITABLE TO RUN UPTO 10000 KMS. OR

UP TO HOW MANY KMS IS SUITABLE TO RUN THIS OIL IN THE VEHICLE MENTION BELOW.


VEHICLE SPECIFICATIONS(MODEL# HINO -IJSERIES2006-2007)
1. 6 CYLINDER
2. 205 HP
3. OIL CHAMBER CAPACITY 14 LITRES

A. DAILY RUNS 800-1000 KMS FOR LONG ROUTES.
B. COUNTRY CLIMATE 30-38 degree centigrades through out the year.

Jonny-b is absolutely correct.Since it is a monograde oil,harsh conditions may reduce the quality of the oil very fast,especially viscosity.Before taking it to further,it is better to send some used oil sample to any lab to check it for different parameters like viscosity,TBN,TAN etc......

Sorry to disagree with KM, monograde 50 probably the best bet for the ambient conditions. API CD/SF about as low a turbo diesel spec you can obtain.
If this spec is OK for Hino model, then would check a few oil samples for mainly soot, silicon for dust/sand intake and TBN depending on Sulphur in the fuel.
1000 km runs seem an ideal run for the vehicle, but extending oil drain more likely to be curtailed by sand ingress. Trust cooling system adequate!
If soot OK, silicon low level, TBN OK at 10,000km then would try extending by an additional journey at a time, but check with oil anlysis.(this can be inexpensive ~6-20 US dollars). Once established watch out for any fuel dilution and air filtration problems.

I use Delo 400 on my HINO which is operated under hotter ambient temps and after 174000km I have excellent results, no wear and tear on my engine.

I would never use a straight 50 wt oil in an HINO engine that has to be started at below 25 degrees C. Don't just think of the afternoon highs.
If you really want high viscosity, use a 20W-50.

Also, the use of a CD oil is going to cut that engine life at least in half. That is the most expensive way to "save money".

Get a CI-4 (or CH-4 if you can't find CI-4) 15W-40 or 20W-50 and after the third oil change have some analyzed if you can. Depending on your driving and the condition of your filters and injector pump you might be able to pass 15,000 or 20,000 km.

A SAE 50 CD is surely a group I oil that will not hold up, not protect. Probably like the ones our national government produces that thin and then thicken again. 3000 to 4000 km is stretching it.