I did a bit of research a few months ago and I don't think you can have to much regardless of which oil you choose.  I went to amazon and bought a 4-pack of zddplus.  
Incidentally, I have been very impressed with Rotella Dino as well as T6.  Check this out of you haven't yet.  

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1344471565

Kris01 wrote on 03/04/14 at 19:05:24:


I use Rotella T with 2 onces of ZDDP additive as well.  You are correct regarding the 2k ppm, that would be a lot!

I saw a Savage with 90+ thousand miles on it some years ago. Like maybe 06 or 07. From the looks of it, it was never pampered. Id bet it never saw any ZDDP. It probably didnt have the benefit of Rotella. Not everyone knows about it. Putting some ZDDP in cant be a bad plan, but Id be willing to bet that just running Rotella-T will keep the engine alive for so long the rest of it will be plenty shabby & youll be way tired of it. Ive come to the point in life where I see the end of things, including me. I am a lot more REasoned in my behavior toward things. I see no reason to go to the ends of the world to keep an engine alive for years past the chassis. Im all for avoiding allowing poor maintenance habits creating repairs, but going above & beyond what is necessary just so I can feel superior to everyone else? Never did.. Its almost the same emotional thinking the truly uninformed often express when talking about gasoline
"I only give my BayBee Premium, cuz she deserves the best",, just dumping $$ in a hole for nothing,, The questions I ask myself now are
Will this time & $$$ Im investing actually change the USEful life of the machine? If not, Im backing off.. Ive even slowed down oil changes on the lawnmower,, I can SEE the future of that thing,, it uses Zero oil after 7 years, runs really well. The death of it will be in the deck & transmission areas. Busting my butt to keep that engine in Super Shape? Why? Ill get at least 5 more years out of the engine at this rate. I dont see the deck & steering & drive axle & all that making it more than another 5 years,
So, look down the road, decide how you want to keep things. Dont allow "training" to be what decides for you how you spend your time & $$$. Im not suggesting being lazy & not taking care of things, Im just saying that sometimes what we've been taught may be costing us time & $$$ unnecessarily.

Are you diligent about emptying the fuel & running them dry? If so, maybe the non ethanol is a step beyond. If theyre modern enough that the manufacturer should expect to see ethanol fuels, then the little, fidgety carbs are problee okay on plaino pump gas,, I think the W-650 isnt okay with it,, the accelerator pump diaphragm died,, it was ate up.. I have a saw I left with fuel in it, after almost a year it fired right up. Taking care of something like a high $$$ chain saw, youre not spending much $$ or time ABOVE what youd spend if you didnt go with the best. Youre not using enough gas or oil in a year to matter either way, if you went the cheap route, what would you save? 5 or 10 bucks? Youre not wasting your life worrying over them or spending much. Something that gets used an hour & set up for 6 months? When its time to go, you dont want to have to spend 3 hours cleaning a carb up..

justin_o_guy2 wrote on 03/05/14 at 13:15:03:


JOG, yep. I'm 62 and yeah, stuff dies.  Immortality if an illusion. Do your regular maintenance and identified issues and accept reality.

Allow me to play Devil's Advocate for a sec...

If the bike/engine was engineered to run on whatever grade of oil was prevelent at the time and the oil formula changed (less zinc nowadays), then wouldn't it be prudent to add enough zinc to equal the quantity in the older oil that the bike was designed to use?

Dave wrote on 03/07/14 at 05:14:03:


That makes me feel a little better after ordering some zddplus.  I would want to kick myself if my rockers looked like the ones Dave posted a bit back at 17K.  I hope to enjoy my S40 for many years to come.