I did a little bit of research (the first piece was learning how to search this forum!!) and I read everything here I could about oil. Sorry about posting redundancies!
I went to ye olde Canadian Tire and checked out both Rotella and Canadian Tires own Desiel oil. The Shell was only rated to a CJ -4 rating while their brand was rated to CI-4,CH-4,CF/SL. In an earlier post I said Rotella was rated to a CI-4 rating but that was from an old jug I had in the garage. So things definitely has changed!
My conclusions would be that the Canadian Tire brand has more ZDDP than the Rotella? But how much?
I have done some more digging, and based on what I have found, I will not be using Rotella. Based on the suggested ZDDP numbers of 1000-1200 ppm for Rotella I will be using something else. I got a bottle of the Castrol GTX diesel (as suggested by retired gentleman) and it is CI rated rather than CJ as the Rotella is. I looked at the various diesel oils at Wallmart and have found two types of their own brand. One is for personal diesels and the other is for agricultural diesels. The one for personal is CI rated while the agricultural use one had another designation (of course I can't remember what it was!) but I am inclined to think it might have a higher ZDDP content.
Re-reading this post has confirmed in my mind that I still don't know what I am going to be using in my xs!!! But Rotella I will not be. My engine is mild in performance but it does have a high performance cam and high tension valve springs. I just want to protect my efforts.
As an aside I found this article half way down I believe explaining the various oil designations CJ SM etc....
Actually John i am wrong I was able to find one shop locally that had the VR-1 racing oil in stock. I found an oil analysis of it on the web. The numbers can be all throughout the range depending on who does the testing. The lab called "Blackstone" tends to low ball numbers while this one here is somewhere in the middle between the really low and the really high figures I have seen.
mwb122: Another newbie here. I appreciate the page and being accepted. Just brought home a 78 xs650 special. She is running good after a little TLC. So far I have cleaned the carbs, battery, fixed leaking clutch push rod oil seal. Now what to do with her.
Jan 3, 2014 8:50:55 GMT -5
mwb122: Bought a 79 special in 79. Was a great bike then and it is great to see they have such a large following!!!
Jan 3, 2014 10:30:04 GMT -5
oldcodgerhenry: Gooday ,all .new Pamco basic ign replacement arrived yesterday ,But the coil wires are different color ,to the trigger wires ,don't want to fry new one.
Jan 29, 2014 15:41:34 GMT -5
floris: at this moment, my XS is with Jerry v.d. Heiden, a well known XS tuner in the Netherlands.
Feb 4, 2014 16:28:08 GMT -5
floris: The engine become's a rephased 270 crank.
Feb 4, 2014 16:28:37 GMT -5
floris: Also a bigbore cilinder set of 890 cc.
Feb 4, 2014 16:29:10 GMT -5
floris: Also a long stroke is gona be applied, what makes the total about approx. 1000cc.
Feb 4, 2014 16:30:12 GMT -5
floris: 965 cc to be exact.
Feb 4, 2014 16:30:35 GMT -5
mahanlee: need help identifying a gas tank i bought on Ebay for my 79 xs. it has a tall neck and the new mikesxs cap i ordered will not work on it. any suggestions?
Apr 10, 2014 13:43:49 GMT -5
mahanlee: Need help identifying this part. It came in a box from the previous owner. I have searched Google and Ebay and haven't found something similar. It has a short bolt with a flat side. The only place I figure it goes is underneath the battery box.
Apr 23, 2014 8:14:07 GMT -5
djonesxs650: Batteryless setup for '78 XS650 with points ignition....I need a wiring schematic, simple as possible...does anyone know of any posts that can help?
Jun 28, 2014 16:02:09 GMT -5
gwc1147: I snapped the outer push rod for the clutch while removing front sprocket. I want to change to the longer rod. 77 650d I would also like to replace the seal and front bushing. How do I remove the broken rod? Any help please.
Aug 10, 2014 20:29:00 GMT -5
boxertwin1: I have a 76' XS and need petcocks for the tank. I don't want to rebuild, I want new ones. Weird, but you can only seem to buy right-sided ones. Any source for both sides?
Aug 21, 2014 14:56:18 GMT -5
piscean: would like to know how to change my bulb on 81 650 Yahama left front?
Oct 18, 2014 12:46:30 GMT -5
pablosixfivezero: if your carbs aren't balanced, can that throw off your timing?
Jan 6, 2015 0:08:08 GMT -5
grizld1: Pablo, I suspect you may be joking here, but if the motor's shaking hard enough, I guess it could loosen the ignition fasteners enough to throw the timing off.
Jan 7, 2015 19:37:40 GMT -5
bikest: I'm looking for a list of front disc brakes(rotors) that will interchange with my 77 XS rotors. I down loaded the list from this site a few years ago but can't seem to locate it again? Thanks!
Mar 6, 2015 10:15:43 GMT -5
grizld1: The list you want was posted by jetmechmarty in this thread: www.xs650temp.proboards.com/thread/17334/brake-discs
Mar 18, 2015 7:40:19 GMT -5