Originally Posted By: bullwinkle
Originally Posted By: 01_celica_gt
Originally Posted By: 901Memphis
The Fram Ultra is 99.9% @ 20 microns with wire backed dual layers of full synthetic microglass media. It has the highest holding capacity of any filter on the market up to 32 grams which is why it's rated for at least 15,000 miles.
because of this, I run the Fram Ultra for 30,000 on all my rebuilt 1zz-fe motors, they are even cleaner then how much we could clean them. Valve clearance is verified after 10k on break-in oil, yes all break-in oils are synthetics.
Not to hijack, but what oil do you break in with? How many changes in 30K, three? My 1nz-fe in the xB is 15K into it's 20K Ultra run, changed the Mobil 1 Extended Performance 5w30 at 10K.
Any brand name synthetics, and yes three 10k OCI on the same fram ultra.
during valve clearance, I also verify the cam & crank position sensors for shavings(very easy to access on the 1zzfe in the car), what I have found is that with synthetic blends(only motorcraft)/synthetics(brand name synthetics), I'm getting no shavings, and on the 4 engines that I have used conventional(1 of 4 was syn blend Super S from Menards) for break-in, I got a decent bit of shaving, which upon the next oil (subsequent oil changes are synthetics) change didn't return.
My anecdotal experience says for break-in and the subsequent oil changes, the use of synthetics on this engine would be highly recommended, by not getting any shavings on the magnetic cam & crank position sensors.