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Collectors Choice Oil 20/50 from Moss with ZDDP!

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The ZDDP threads are showing up in quite a number of places. If you search for "ZDDP" on this message board (not just the MG forum) I'm sure you'll find numerous threads.

I was of the understanding that the wear associated with ZDDP removal was more than the myth as presented in the PDF link posted by Mickey. However, I haven't pored over tons of studies and reports so I can't offer an educated comment. If you're concerned about the removal of ZDDP, there are still additives that you can buy that will put the it back in your oil... the least expensive and most common being STP in the RED bottle.
 
As I use Honda 20/50 motorcycle oil in ALL my bikes, both old and new since it is designed to also survive the forces present inside the transmissions of those bikes, I was thinking of using the same in my TD. It has the additives to survive the shearing forces in tranny gears as well as doing the job in the motor and cams.

I would think this would be more than sufficient in the TD.
 
I would recommend against using motorcycle oil in your TD. Oil is not all the same, and motorcycles have different requirements for lubrication than cars do. The additives and special formulations make a big difference in how the oil reacts to certain situations, and this is why there is a separate type of oil for motorcycles.
 
Valvoline VR-1 is suitable for street use, and has ZDDP. Much easier to come by and less expensive than what Moss is selling. Last I checked at Autozone, Valvoline VR-1 20W-50 was around $2.50 a quart.
 
mk2sprite said:
Mickey, dows the Shell Rotella HD oil have the ZDDP?
Mike
Click to expand...

It does, though not as much as some others. I went with the Rotella on Woody Cooper's recommendation.

Here's a site that compares various brands and viscosities:

https://micapeak.com/info/oiled.html

This, from the report, is interesting:

"% zinc is the amount of zinc used as an extreme pressure, anti- wear additive. The zinc is only used when there is actual metal to metal contact in the engine. Hopefully the oil will do its job and this will rarely occur, but if it does, the zinc compounds react with the metal to prevent scuffing and wear. A level of .11% is enough to protect an automobile engine for the extended oil drain interval, under normal use. Those of you with high reving, air cooled motorcycles or turbo charged cars or bikes might want to look at the oils with the higher zinc content. More doesn't give you better protection, it gives you longer protection if the rate of metal to metal contact is abnormally high."

Again, my thought is that as long as the oil is changed out regularly, I'm safe. My car doesn't see all that much usage, so I'm not overly concerned.

Mickey
 
IIRC, from an article about camshaft failure in "Hot Rod" (I believe), within the last year, they came out with a new Rotella with no (or very, very little) ZDDP, but the older formulation is still out there- all Rotellas are not created equal.
 
Diesel oils have been stripped of ZDDP and other essential ingredients just like regular gasoline engine oil. Another problem with diesel oil is that it contains a LOT of detergents, and putting it into an engine that has run on standard oil all its life can cause serious problems if deposits are knocked loose. Proceed carefully!
 
All oil have zincs, most just less than they use to, I use Vavoline VR1 20/50, which is one of the few, "easy to find in your local parts store" oil, it has a higher ZDDP amount than the other street oil, but still is a normal change interval oil, every 3000 miles. Vavoline does make another racing oil, that had printed all over the bottle not for street use, and you have to have the secret part number given to you by the Asland Co. to even special order it, so don't worry about off the shelf VR1 it's exactly what you need in your LBCs. Red line, Vavolinr, etc can't even put the specail race oils on the shelf at the local parts store for you to buy. So buy the VR1 with cofidence, been using it for years, and looking in my motors to see the results, which were very good.
 
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