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"I didn't know that they are also Valvoline, I've been running Valvoline VR-1 Racing oil until now on the advice of my engine builder."
The VR1 is a Non-Cat Street Legal racing oil with zddp - The Rouch stuff just gives you more choices.
"Just found this company called ZDDPlus, they have forum under zddp forum.com. they sell a small bottle for about $10 which treat 5-6 quarts. Looks like a very informative company"
This stuff is good if you want to run a conventional oil in a non-cat engine.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.