Anyone use Rotella T diesel oil in their gasoline e30?

[MattAvino]

I will never know what oil to put in my m20...:(

[deucey]

I found this over in a hotrodder's forum, maybe this will help:

"Hey Ya'll,
The latest rumors about Rotella had me thinking we were down to using high dollar racing oil. Found a Rotella web site, emailed a question, took a nap, got a reply. Sometimes its your day. Here is question and reply;
I have heard that Rotella T CI-4 is being phased out, replaced by CJ-4. Is the ZDDP content being reduced? If so, by what percentage, or what will the PPM of ZDDP be with the new oil if its not a trade secret? The hotrod guys are dying to know, we've all been using Rotella due to flat tappet camshaft break in problems using the new oils without the ZDDP additives.

Here is his reply:
We still sell Rotella T 15w-40 CI-4 in 55 gallon drums, but not in smaller packages. It has approximately 1400 ppm zinc. You can buy this from a shell lubricants distributor.
Since Oct. 15,2006 all small packaging has been Rotella T with triple protection 15w-40 CJ-4 and it has approximately 1200 ppm zinc. This is 50% more zinc than current passenger car motor oils which contain approximately 800 ppm zinc. Passenger car motor oils had approximately 1200 ppm zinc prior to 2001. In 2001 the zinc was reduced to 1000 ppm and in 2005 reduced again to the current 800 ppm.
Thus, the new Rotella T with triple protection 15w-40 CJ-4 has the same zinc content that passenger car motor oils had in 2000 before the current problems with flat tappets began.
However, zinc compounds are not the only additives that can reduce wear. We were able to reduce wear approximately 50% with the new Rotella T with triple protection 15w-40 CJ-4 formulation.

This is from a staff engineer in Houston, Texas."

[Devil Inc]

I have used Rotella T in my E30 since I bought it.

[Shangsta]

if you are soo concerned with zddp just buy the comp cams zddp additive and throw in with whatever oil you run...

[Vivek]

Now this is driving me insane. I know I won't put synthetic in my m20. But for the 193k m42, is it actually a good idea to use (switch to) synthetic? I don't want it to leak, but I also don't want any engine wear on this older engine. Some people seem to say just let sleeping dogs lie, and dino is perfectly fine. Others say that it was designed for the uniformity of synthetic. Most tend to say that synthetic's smaller particles and cleaners will cause leaks, which would be absolutely terrible on an otherwise leak-free e30.