Engine oil - ZR-1 Net Registry Forums

Vette73 · 01-18-2015

What oil and what viscosity are good for the LT-5?
I heard amsoil is good but you really can't get it at the local
Auto zone..

How about the Mobil-1 brands?

1990 quasar blue · 01-18-2015

Mobil 1 high mileage in 10w30 here. I can buy it anywhere in the proper weight and Marc says it has enough zddp.

hiperf406 · 01-18-2015

I use Amsoil ZROD 10w30 it has enough ZDDP, seems goo.

lorne #1748

We Gone · 01-18-2015

http://www.zr1specialist.com/HAT%20W...dern%20oil.htm

mike100 · 01-19-2015

I mix 3 qts of Amsoil Z-Rod to 5 or 6 qts of Mobil1 that I get in jugs at Walmart. The additive package in the Z-Rod is overkill for our application, but I roughly figured out that my blend approximates the additives available in 1990's vintage oil. One 12 quart case of the Amsoil will last for 4 oil changes (3-4 years for me). I also choose to blend because it is a little pricey to run Amsoil.

Dynomite · 01-19-2015

Quote:

Originally Posted by mike100

I mix 3 qts of Amsoil Z-Rod to 5 or 6 qts of Mobil1 that I get in jugs at Walmart. The additive package in the Z-Rod is overkill for our application, but I roughly figured out that my blend approximates the additives available in 1990's vintage oil. One 12 quart case of the Amsoil will last for 4 oil changes (3-4 years for me). I also choose to blend because it is a little pricey to run Amsoil.

I am thinking you can pick up Mobile 1 at Walmart for about $6 a quart. I get Amsoil 10w 40 delivered for about $10 a quart. I do not have to drive 5-20 miles to WalMart. And I do not have to concoct my own Oil Mix for the ZR1

And I know Amsoil is the correct oil just because.......actually because Marc says so Engine Oil Technical Information

I like to "treat" my LT5s with the best

But then again....I am one to replace liners if I find a minor scratch or imperfection

Amsoil AMO ZDDP specifications:
Phosphorus 1265 ppm
Zinc 1378 ppm
Recommended for the LT5 engine. Also for other engines with high tension valve springs.

mike100 · 01-19-2015

The 5 quart jugs at Walmart come out about $5 a quart. ($24-$26 usually)
I buy more than one to minimize trips to witness the human circus.
I also stock up on oil filters.

XfireZ51 · 01-19-2015

I use CastrolGTX 10W-40 Diesel. It has the necessary amount of zinc and phosphorous needed. And I have been using it for nearly 4 years on re-ground cams. Lobes look new. Get it in the 5qt jugs.

Myt415 · 01-19-2015

I just wanted to let you know that I am an Amsoil dealer/distributor and can help with all your lubrication needs. I use it in my zr1. It is great stuff

01-18-2015	#2
1990 quasar blue Join Date: Feb 2004 Location: Ma Posts: 404	Re: Engine oil Mobil 1 high mileage in 10w30 here. I can buy it anywhere in the proper weight and Marc says it has enough zddp. __________________ 1990 ZR1 #2574 Medium Quasar Blue Metallic 1 of 19

01-18-2015	#3
hiperf406 Join Date: Apr 2007 Location: Spruce Grove Oilberta/In Mex for winter Posts: 1,046	Re: Engine oil I use Amsoil ZROD 10w30 it has enough ZDDP, seems goo. lorne #1748 __________________ lorne # 1748 Stock except for a modified Corsa exhaust. When the flag drops the bull sh1t stops!

01-18-2015	#4
We Gone Join Date: Apr 2004 Location: ATL. GA. Posts: 2,162	Re: Engine oil http://www.zr1specialist.com/HAT%20W...dern%20oil.htm __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

01-19-2015	#5
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: Engine oil I mix 3 qts of Amsoil Z-Rod to 5 or 6 qts of Mobil1 that I get in jugs at Walmart. The additive package in the Z-Rod is overkill for our application, but I roughly figured out that my blend approximates the additives available in 1990's vintage oil. One 12 quart case of the Amsoil will last for 4 oil changes (3-4 years for me). I also choose to blend because it is a little pricey to run Amsoil.

01-19-2015	#7
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: Engine oil The 5 quart jugs at Walmart come out about $5 a quart. ($24-$26 usually) I buy more than one to minimize trips to witness the human circus. I also stock up on oil filters.

01-18-2015	#1
Vette73 Join Date: Nov 2014 Location: Brooklyn ny Posts: 1,045	Engine oil What oil and what viscosity are good for the LT-5? I heard amsoil is good but you really can't get it at the local Auto zone.. How about the Mobil-1 brands?

01-19-2015	#8
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,664	Re: Engine oil I use CastrolGTX 10W-40 Diesel. It has the necessary amount of zinc and phosphorous needed. And I have been using it for nearly 4 years on re-ground cams. Lobes look new. Get it in the 5qt jugs. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

01-19-2015	#9
Myt415 Join Date: Jan 2015 Location: Tigard Posts: 5	Re: Engine oil I just wanted to let you know that I am an Amsoil dealer/distributor and can help with all your lubrication needs. I use it in my zr1. It is great stuff