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Welcome Giacomo ..
I always use mineral oil .. I prefeer change it sonner ( at most 3K km ) than later with a expensive oil on my 2 turbo cruisers ..

There are always hold overs! Ole Tap appears to be one of them... The lubricating properties of a good synthetic are a few dozen times better than ole dyno whether you change it early or not. 20,000 mile synthetic is better oil than NEW dyno!
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There are always hold overs! Ole Tap appears to be one of them... The lubricating properties of a good synthetic are a few dozen times better than ole dyno whether you change it early or not. 20,000 mile synthetic is better oil than NEW dyno!
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So what happens to all the soot in the oil that cant be filtered out during its 20000 klm interval?
I like the idea of 5000klm oil and filter changes. Plenty of my friends have run their 1HZs past the 500000 klm mark on mineral oil with no noticeable loss of compression or bearing wear.
Also, if you extend your change interval you eliminate the cost difference as well.
As I spoke of earlier, those kinds of oil change intervals require a bypass oil filter. They typicaly filter to less than 4 microns. Many times less than 2. Ive read oil analysis reports that state that at 20,000 miles a good synthetic often times (with the right filtration) has better lubricating properties (still) than dyno!
Also, if you extend your change interval you eliminate the cost difference as well.
I would and do run syth in DI Toy diesels (both 13BT's and the 12HT) to 10,000kms, with a new filter and top up at 5000kms. Oil samples twice run up to 10,000kms confirmed all was/is ok.
gb
I run Penrite SAE 15 Diesel 15W-50 in Southern Australian Conditions, have done so for more than 100k kms and car has been 225psi down in compression across each cylinder since before then. It's going in for a rebuild now, but I'd recommend that oil to anyone.
I do -heavy- towing and have an aftermarket exhaust brake fitted to lessen the strain a bit. Car runs highway kms quite frequently.
