Would have responded sooner but a storm knocked out phones for several days.

Signed onto this forum because everyone seemed so decent and I didn't ever see anyone jumping on someone's ass for thier opinion, till now.  Plus, I don't care for people who take shots from afar.

I've run diesel for 22 years, pick ups to class 5 trucks, three diesel cars and at least three tractors. I've run Pennzoil, Ursa and Rotella oils. I've also run diesel oil in my 460, 428, two 360s, and y blocks. In my two current diesel cars the manufacturer is adamant about not using the "older" style oils.

If you follow what is happening in the diesel world you will see the continued use of the words "cleaner" and "less build up". It's being used about engines, fuel and oil. The big thing to make diesel oil cleaner, take out as much ZDDP as possible just like the cars.  I don't know when it will happen, how much will be removed but it will happen because the government wants it and so do the greenies.

Mike Johnson

I'd rather be lucky than good.................

    but good ain't bad!!

Ive never seen a subject beaten to death as this one. Apparently no one reads the other entries on this subject.



No other than Ted Eaton, YBlock engine builder deluxe, recommends any oil 10/40 or higher as perfectly safe for YBlocks. Current Rotella and 10/40, 20/50 dino oils have at least twice as much ZDDP as oils in the 60's.



Another YBlock restorer and engine builder of 55-57 TBirds says the same thing. He commissioned a study on this.

54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

I recently changed oil in my 87 IH truck with 6.9 using Rotella. The last gallon I added said low emission new improved blah blah blah. To me this all means there is less ZDDP in it which my older diesel needs too.

In my hydraulic lifter engines I started using Comp Cams ZDDP additive which states it's not break in additive or racing additive but engineered to be run with regular oil and changed at normal oil change intervals.  I'm counting on Comp to have engineered a product that will perform as they still sell a bunch of non roller cams.

I spoke one day with a Valvoline engineer and you are absolutely correct the racing oil you mentioned is their only product with ZDDP.

I've heard the Amsoil is good stuff but what is the cost? Can anyone give me an idea of case or gallon price? I have 5 trucks and cars that need the stuff so unfortunately cost is a factor.

Thanks

Missouri Mike

I'd rather be lucky than good.................

    but good ain't bad!!

So do I, in 10/30 version VR1.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Valvoline VR1 racing oil is available at your local parts store, is priced like plain ole cheap oil and has "old fashioned Zinc additives" in it. I run it religiously in my 60 292 and does just fine.

Hey Guys;;   I use shell, but I put in a bottle   ZDDP just to be save.  Tooo much invested to take a chance.   Have Fun   God Bless and thanks to all for this great site!!!!   Eddie

Eddie

Lake Forest, Ca. 92630

I believe the GM additive was designed largely for the brief, initial break-in run. Likely the others would suffice in a pinch for that also?



New diesels with cat. converters unable to use higher zinc formulas, but I suspect their heavier loading of engine components compared to high RPM/roller cam gas engines will still likely keep that oil to a higher zinc content. Again, higher detergency could possibly be problematic though if not addressed, but previously mentioned rotation might eventually clear the sludge from an old engine?

6 VOLTS/POS. GRD. NW INDIANA

Thanks Paul.I found Daniels input interesting.About whether or not the Zddp additives actually do mix with the oil.With all the various suppliers selling the additives it would be nice to know if they are actually effective.Also as I mentioned before apparently you can have too much Zddp in the oil.The diesel formulated oils have a higher Zddp content than the gas formulated oils.I thought the Rotella-T was a diesel oil yet the PPM of Zddp is actually quite low.

  

The latest formulation of Shell Rotella T 15/40 has 1100 ppm of ZDDP. This should be ok for any basically stock engine. In addition, any 10/40, 20/50 dino oil has enough ZDDP. If breaking in a new engine, I would add a supplement such as GM (gasp) EOS or any of the other supplements.

54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Oldcarmark;

You can order Amsoil products factory direct. I can send you a retail catalog if you want. If you're interested, send me a PM.

Rono

  Ron Lane,  Meridian, ID