Re: KPack's 1954 Panama

Posted by humanpotatohybrid On 2024/4/29 19:09:16

As of 2017, Shell Rotella T4 Triple Protection 15W40 has 1200 PPM zinc. Personally I doubt they would change the formula and keep the name. 🤔

By the way, there's no such thing as motor oil "not having zinc" in it unless you have a century old unopened can. All modern motor oils have a baseline of about 800 PPM zinc. For example, your basic Pennzoil 10W30 has 900 PPM.http://www.pqiadata.org/Pennzoil10W30.html

VR1 per their website has 1400 which is about the most you'd want to run in anything normal as too much ZDDP will cause unwanted chemical reactions. Though extreme applications (racing) you might see 2000 PPM, those engines obviously have a MUCH shorter MTBO.

I see no problem running either VR1 or Rotella in a postwar Packard. VR1 is probably a bit better, but not because it has more zinc, because it's specifically formulated for gas engines. Though unless you change your oil on a mileage (vs yearly) basis, it probably barely matters.

Just my

BTW, check out this article. Tells you everything you need to know. 😃https://forums.aaca.org/topic/294134-engine-oil-recommendations/?do=findComment&comment=1612046