oil type and oil pump

[fixkick]

so true, its used in the hope to clean engine
but what if engine was super bad, full of sludge.
and you broke that all up.. it goes places unwanted, and clogs, up pump screen or worst the timing bearing shell oil holes.
or that 0.050" head orifice.
id just change oil more often if engine looked dirty doing say , the lash check.
if the head top is clean, then do noting, at all special.
bad
http://ricksfreeautorepairadvice.com/wp-...sludge.jpg

good

http://d1zlh37f1ep3tj.cloudfront.net/wp/...ludge2.jpg

the latter needs nothing special at all, change oil normally

the problem with switchs is the vast numbers of thread sizes.
huge.
npt.
British pipe thread,
ISO metric no taper.
metric pipe like m10.
then pressure, ( lots and lots of permutations)

a custom gauge , some have the lamp warning as an option.
and is adjustable.
try summit racing?

http://www.summitracing.com/?gclid=COqTh...aQod8z8LXQ