Redline and ZDDP.
I just had a discussion with A Tech at Redline, CA. I asked how much ZDDP they have if any in there Motor oils.
Conclusion:
All there Motor oils contain ZDDP, since they are not API rated and do not have to follow the current smog/emissions standards.
There Engine oil line (all Products) excluding the 15W-40 Diesel product has 1200PPM and 1330 Zinc.
The Diesel 15W-40 has 1120PPM and 1200 Zinc.
Dave was the tech I talked to 1-(707) 745-6100 Pacific time.
So if ZDDP is important to you seems Redline has it covered.
I have never used Redline motor Oil but have always used there Gear Oil.
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2002 Discovery 4.0 55K
Delo 400 5W-40 synthetic
CI-4 PLUS, CI-4, CH-4, SL (SAE 5W-40)
Zinc=1310
Phosphorus=1560
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