Macrobb
Full Access Member
Our engines have very wide clearances and very large bearings. Roller lifters mean no appreciable wear as long as you have some oil in there.
The only problem comes with NOT changing the oil - With the wide clearances comes lots of crud into the oil. If not flushed out, that crud will build up in places and cause sludging.
Put some decent thick oil in it(15W40) and change it every 2500-3000 miles. Simple as that and you won't have any oiling-related issues.
I use Mobil Delvac 15W40 in my engines - it's cheap and decent. Never seen an oiling-related issue, period, in the motors I've run.
Heck, even the one motor with the snapped connecting rod? The bearings still had a nice film of oil on them and turned freely, even though it had sat for a full year and a half!
(So much for 'dry starts'... when the oil film lasts for over a year...)
The only problem comes with NOT changing the oil - With the wide clearances comes lots of crud into the oil. If not flushed out, that crud will build up in places and cause sludging.
Put some decent thick oil in it(15W40) and change it every 2500-3000 miles. Simple as that and you won't have any oiling-related issues.
I use Mobil Delvac 15W40 in my engines - it's cheap and decent. Never seen an oiling-related issue, period, in the motors I've run.
Heck, even the one motor with the snapped connecting rod? The bearings still had a nice film of oil on them and turned freely, even though it had sat for a full year and a half!
(So much for 'dry starts'... when the oil film lasts for over a year...)