just one caviat modern iol burners can have comp ratios as low as 16 to 1 so they aint going to mash up the lube like our 23 to 1 rattlers , volvo use 0/30 in cars with 18000 mile intervals but warn the oil can go bad much past 20000 (fully synth) I had to replace the motor in one (d5) the guy had run 28000 on the same oil & it had turned to tar. they say when the modern type oil goes bad it does it fast , but change it when ever your happy for your own preference so long as u check it regular , if it looks shit it probly is d24`s started out at 5k services & later went to 10k so if your in that ball park most people will be happy lol.
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