I cannot recommend changing from 1 brand to another or 1 type of oil to another often.

The rings on the '96 which I used for the oil tests wore out shortly thereafter.

vincesingleton wrote on 11/10/15 at 10:54:18:


Nobody on this forum ever recommended that you use Suzuki oil!

Not sure what kind of diesel oil you have - but at the moment the Shell Rotella T or T-6 is the oil we recommend.  And until lately you didn't need to bump the ZDDP level up at all - but the ZDDP level has been dropped to 1,100 ppm....so we recommend you add 1 oz. of Redline ZDDP additive to each new oil change.

Use up the T-6 oil you have and dial back in then as we will know better answers by then.

Odd are your T-6 is slightly older stuff anyway, which had less of the moly and the boron in it.

My concerns are based off a much abused clutch that is only showing MINOR warm up slippage, but warm up slippage is something that has come up occasionally for years now from people who were using energy star laden car oils.

In reviewing the HDEO list current today, the ZDDP is down to the 1,100 PPM level and the moly and boron are up to the 44-69 PPM level (or higher in some cases if you add them together).  

Seriously,  4 years ago a listing of SL grade car oils looked a lot like this list of HDEO's just taken this year, seriously.

I used to say that moly was staging a come back driven by the reduction of ZDDP (they have to have something to give long life characteristics to the oil if they can't use ZDDP).  Now, having reviewed the latest shift I would say the use of moly and boron are up again as the ZDDP goes down again.

Boron is like moly, except perhaps a bit more effective as a slippery stuff.   Both are used to coat jacketed rifle bullets for greater speed and less cleaning (and I have set ups to apply both to my jacketed bullets).   Putting some of such stuffs in my clutch isn't the best of ideas .......

AS YOU LOOK FOR A BUMPABLE OIL, look for something that LACKS the bad stuff and count on having to bump it to put back enough of the good stuff.

This is a quote from a ZDDPlus tech brief:

The most common way to indirectly measure the ZDDP content is to use one of several ASTM test methods to measure the phosphorus and zinc content. Zinc can often be added to oils as an acid neutralizing agent, so zinc is not a reliable indicator of ZDDP. Since phosphorus is found in oils predominantly in the form of ZDDP, we use it as the measurement criteria for ZDDP.

http://zddplus.com/2013/11/zddplustm-tech-brief-7-oil-additive-dosing-and-dil...

McAfee gave me a 'risky behaviour warning' on that site lol
so this oil would be the shiz straight from the bucket, at a good price point (depending on shipping costs) but what about settling out? I'd hate to have to shake that whole fool drum up lol

Ford's 4.6 V8 did not fare well with thicker oils in Taxi service in our fleet, the cam chains wore prematurely
using the correct oil weight seemed to fix this issue, or at least the issue didn't occur when correct oil was used

prechermike wrote on 11/11/15 at 12:48:44:


Mike:

The information will be in the Tech Thread....when I get off my butt and post it there.  I just have been so busy at work it is hard to find the time....yesterday I got here to work at 5:30 AM....and didn't start home until 8:00 PM.