As someone over the hills and far away once said: "some oil is better the no oil".
That aside, I think this debate is much like financial planning: No one cookie cutter application suits every application, no matter how much the coffee table pundits would like to declare.
Are you dirty diesel, or clean diesel. Are you IDI or DI. Are you computer controlled or mechanical controlled. Are you in a temperate climate, a climate with wild swings, or always 30C. Are your highway or city. Are you fresh new tight engine, or old tired loose engine. Are you taking samples and sending for analysis, or just winging it.
Answers to the above will perhaps lead you too the weight and service intervals you need for your application.
For me, with a 12HT and 13BT I have found that 0/40 Esso XD returned good test results which resulted in me being able to run 10,000kms oil changes, with a filter change at 5000kms. The oil not only looks cleanish, the test results say continue to use...at the 10,000kms mark. I dont. I've recently changed to Rotella T6 (05/40) due to price points, and have not run samples. I do know in either of these oil uses...startup clatter at all temps in reduced when compared to conventional 15/40...specially when coldish.
With my idi 3B (dirty engine) I typically run delo400 15/40 and was changing at 5000kms when a daily driver. For all the reasons given. Now, its under 1000 kms or so for the 3 months its insured, and it gets an oil change once a year. If I ran this in the winter (our moderate winter) I would be tempted to run slightly lighter weight for startup clatter. But something that would not hurt too much at a change of every 5000kms.
There has been some good advice on this thread, and some standard cookie cutter responses. You decide what suits your use and your climate, based on your test results.
Was this a cookie cutter response?
hth's
gb
That aside, I think this debate is much like financial planning: No one cookie cutter application suits every application, no matter how much the coffee table pundits would like to declare.
Are you dirty diesel, or clean diesel. Are you IDI or DI. Are you computer controlled or mechanical controlled. Are you in a temperate climate, a climate with wild swings, or always 30C. Are your highway or city. Are you fresh new tight engine, or old tired loose engine. Are you taking samples and sending for analysis, or just winging it.
Answers to the above will perhaps lead you too the weight and service intervals you need for your application.
For me, with a 12HT and 13BT I have found that 0/40 Esso XD returned good test results which resulted in me being able to run 10,000kms oil changes, with a filter change at 5000kms. The oil not only looks cleanish, the test results say continue to use...at the 10,000kms mark. I dont. I've recently changed to Rotella T6 (05/40) due to price points, and have not run samples. I do know in either of these oil uses...startup clatter at all temps in reduced when compared to conventional 15/40...specially when coldish.
With my idi 3B (dirty engine) I typically run delo400 15/40 and was changing at 5000kms when a daily driver. For all the reasons given. Now, its under 1000 kms or so for the 3 months its insured, and it gets an oil change once a year. If I ran this in the winter (our moderate winter) I would be tempted to run slightly lighter weight for startup clatter. But something that would not hurt too much at a change of every 5000kms.
There has been some good advice on this thread, and some standard cookie cutter responses. You decide what suits your use and your climate, based on your test results.
Was this a cookie cutter response?
hth's
gb
Last edited:
