ZF fluid change time! - ZR-1 Net Registry Forums

mike100 · 03-27-2017

I blended a couple quarts of the z-rod Amsoil with the jug of mobil1 from walmart. The z-rod is a little concentrated on the zddp additive-way more than ohc tappets need. You can duplicate 1990's mobil1 additive specs by using 2-3 qts of the zrod and the rest modern mobil1.

so then a 12 qt box of the Amsoil will last 4-6 oil changes. You get increased protection, but without overdoing it so much that it costs too much or fouls the catalysts.

Racinfan83 · 03-28-2017

Somewhere on here I read that Mobil 1 High Mileage formula has a lot of ZDDP in it I believe. That's what I use in ALL my vehicles. Perhaps someone like Dynomite knows where that article is and can chime in...
That said - you won't hurt your engine with what you put in it just this once. When you change it again - then use some better recommended stuff with more ZDDP...

Roadster · 03-28-2017

I also use Mobil 1 High Mileage 10W-40, which has a decent amount of
Phosphorus and Zinc. 1000 ppm & 1100 ppm

This may be the article you are referring to, from Marc's website.

http://zr1specialist.com/HAT%20Web/a...5%20Engine.pdf

DRM500RUBYZR-1 · 03-28-2017

I find this helpful.
Hope you do as well

https://mobiloil.com/~/media/amer/us...ecs-guide.ashx

Thanks
Marty

03-27-2017	#1
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: ZF fluid change time! I blended a couple quarts of the z-rod Amsoil with the jug of mobil1 from walmart. The z-rod is a little concentrated on the zddp additive-way more than ohc tappets need. You can duplicate 1990's mobil1 additive specs by using 2-3 qts of the zrod and the rest modern mobil1. so then a 12 qt box of the Amsoil will last 4-6 oil changes. You get increased protection, but without overdoing it so much that it costs too much or fouls the catalysts.

03-28-2017	#2
Racinfan83 Join Date: Apr 2013 Location: Eastern Missouri Posts: 773	Re: ZF fluid change time! Somewhere on here I read that Mobil 1 High Mileage formula has a lot of ZDDP in it I believe. That's what I use in ALL my vehicles. Perhaps someone like Dynomite knows where that article is and can chime in... That said - you won't hurt your engine with what you put in it just this once. When you change it again - then use some better recommended stuff with more ZDDP... __________________ [LEFT][SIGPIC][/SIGPIC][/LEFT] [CENTER][COLOR=Indigo][SIZE=4][I][B] Now Sold 1990 ZR-1 #2093, Black on Black..[/B][/I][/SIZE][/COLOR][/CENTER]

03-28-2017	#3
Roadster Join Date: Mar 2014 Location: Warrington PA Posts: 1,913	Re: ZF fluid change time! I also use Mobil 1 High Mileage 10W-40, which has a decent amount of Phosphorus and Zinc. 1000 ppm & 1100 ppm This may be the article you are referring to, from Marc's website. http://zr1specialist.com/HAT%20Web/a...5%20Engine.pdf __________________ Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member

03-28-2017	#4
DRM500RUBYZR-1 Join Date: Sep 2008 Location: Mullica Hill, New Jersey Posts: 2,566	Re: ZF fluid change time! I find this helpful. Hope you do as well https://mobiloil.com/~/media/amer/us...ecs-guide.ashx Thanks Marty