Originally Posted by leoblack9
Originally Posted by pitzel
I wouldn't consider that to be 'severe service'.
I've run Esso XD-3 0W-30 full synthetic HDEO for over an over 50k mile/10 year interval.
I doubt that doing 6000 miles/1 year would be a problem if the engine is otherwise mechanically sound. You probably could go further, but you'd want to verify such with some sort of oil analysis or some other method.
Trying to find a cheap UOA service locally, found one by Monark but they quoted a complete test... $320... not kidding.
Engine is in exellent condition. No oil consumption. A little black smoke at coasting speeds (EGR valve perhaps.. these Toyotas love carbon buildup in the intake manifold).
So is an expensive HDEO oil overkill then? I am literally on the Delvac now, and at 7 months I'm already at 6000miles / 10,000km mark. If I extend and complete the 1 whole year then I'll probably reach 10k miles or 15k km--which is why I asked if the Delvac could reach those kilometers... if UOAs were cheap around here.
Originally Posted by demarpaint
If you want to be sure, have a UOA done, and have them check the TBN. That should eliminate any guess work.
To be honest that's the only real clear cut solution to my question. Currently I found one that does oil analysis and they quoted me $320.. i'll keep looking for cheaper services but in the meantime I'll draw from those who've used Delvac or oil inteded for extended drains + severe service to give me ideas how it holds up.
Originally Posted by Char Baby
I am a bit confused with some of the time & miles but, it is what it is!
With the warm Philippine temperatures, there is little warm up time for the engine which is a good thing.
I am of the belief that 5000 miles is the new 3000 miles and any good conventional oil can do 5000 mile OCI.
Maybe use a synthetic oil?
I agree that ~6000 miles/1 year is fine however I do consider the type of driving style that the OP mention is considered severe with a caveat. There is a 150 mile round trip to help offset the severity of the city driving.
It takes the OP 1+ hrs to travel 18 miles, 2X/day, 6 days/wk. How many weeks/year? IDK but, that'd be over 11K miles/yr. Yeah, that's kinda severe IMO. Maybe two OCI/year???
Sorry I converted everything to miles.. we also use kilometers from where I'm from. Those driving conditions are all year round.. except holidays where we bring the diesel for a long roadtrip (150km~400km one way depending where we are going).
on 2x OCIs at 6k miles each.. I'd follow that if I have invested in a semi-synth.. but what if you're on a Delvac1 or a M1 extended performance oil meant for long drains... how do they hold up when used in consecutive severe driving conditions? (other than UOAs.. I'm still looking for cheaper services here).
Quote
5000 miles being the new 3000 miles..-
That's what I'm actually thinking also, these oils are far advanced from the time when the engineers devised the oil change intervals. In my manual I get recommended a CF grade oil for my diesel... So how would a CK-4 oil stand up to that? Sadly the only answer to that is.. you guessed it - a UOA.
CK-4 is considered backwards compatible with that being said I'm not 100% sold on it meeting the needs of older diesels as well, I do believe it's ok to run though and in your case finding a CF grade would probably be near impossible.