Thread: Time based maintenance: basis?

Originally Posted by stuarth44

all large engines have by pass and the filters are very large, as for changing, the v6 holdens had tiny filters, which caused a lot of eng failures
ok so i've not been here for years
promise to drop the topic

My point was they're not seen on passenger/light truck type diesels except for a few older engines like the TD5, the old Toyota 2H and some Nissan TD42T's over the years.

Full flow filters generally only filter in the beta2=20-30 micron range.
Soot is around 1 micron.
They only pick up larger pieces, handy when you get a catastrophic failure or when people aren't clean at oil or air filter change time, not so handy for actually cleaning oil.

Originally Posted by DiscoMick

Another approach might be to think about changing filters more regularly, rather than the oil itself.
The fully synthetic oils seem able to retain their qualities longer than in the past.
Changing filters regularly can only help to maintain the quality of the oil.
Mind you, I'm still doing 10,000 km services, rather than the 20,000 LR recommends for our Puma Defender.
Its interesting that Mazda still requires 10,000 km services for our 2, even though it uses fully synthetic oils.
I figure oils and filters are cheap insurance for the vehicle to last longer.

10000km oil changes with a new filter, actual cost is around $90-100 if DIY. I see no point of just changing oil filter and not the oil. Change air filter every 20000km, fuel filter every 2 years seems to work for me.