Originally Posted By: Artem
Originally Posted By: hate2work
If you're trying to extend your OCIs, why not use an oil designed for that purpose?
I'll explain it to ya...
I became an Amsoil PC and am simply testing out their different products in my own vehicles for kicks and giggles.
I plan to push Amsoil OE to the limits and then move up to Amsoil XL (10,000 miles) most likely stopping in the 15k range using ASL or SSO, in this particular engine/ driving conditions.
Which Amsoil (I think it was an Xw40) has the highest amount of detergents ???
Some time ago I looked at a VOA of an Amsoil oil it it had 4000 ppm of Ca, BUT I did not take note of which one it was.
If you want to do an extended OCI (Which might well be good for the engine in Fe per mile terms), it's a real good idea to use an oil with a lot of detergents, as blowby contamination (Mostly Carbon) is one of the main limiting factors.
When comparing UOA results it's very important that the driver style and useage of the vehicle does not change. It's also very important to remember that you can get real good UOA results whilst sludge or varnish are starting to build up, which is very important in the longer term.
Most chaps I know in the car industry that like doing long OCI's are UOA fans that only change oil & filters when a sample reaches set limits, BUT are also fans of using an idle flush additive just before an oil & filter job to make sure they are not slowly turning their engine into a sludge monster or accumulating top end varnish deposits.
Originally Posted By: snowmaker
I guess it is not bad but the TBN is low for my likings in your (1MZ? engine)..You could get 2X to 2.5 better TBN, higher ZDDP using there 0w-20, ow-30 there 5w-30..I have seen way better #'s using the above at over 10 to 11,000 miles on this engine (1MZ)...
Link to 10k+ OCI with the 1MZ engine...?
Originally Posted By: unDummy
Not bad for a certified sludge monster.
Run the oil right to 7500 miles.
I was planning to re-sample at 7k but 7.5k sounds pretty good right about now
Originally Posted By: Pablo
Blackstone TBN at 2.9 after 5.6k? Not bad. You were running some additives before, right?
Is this not our first OE UOA? Honestly, stick with OEF next change and see what the Cu and Pb do.
I think it held up nicely for a $3.99/q bottom of the Amsoil oil chain fluid.
Originally Posted By: snowmaker
Originally Posted By: Pablo
Blackstone TBN at 2.9 after 5.6k? Not bad. You were running some additives before, right?
Is this not our first OE UOA? Honestly, stick with OEF next change and see what the Cu and Pb do.
Not bad on TBN???? Are you nuts? I have had better #'s on the Amsoil 5w-30 with over 2X the miles on same engine. Using Pureone old filter too. The UOA is okay at best.
I sampled at 5.5k simply to compare to my previous fill of M1 at roughly the same interval. I'm sure the oil can last much longer and i plan to find out soon...
Ooops! That post finished up in the middle of the replied to one, due to lack of reading glasses.