What is the best oil for the beast. - ZR-1 Net Registry Forums

soslow · 10-25-2009

With the issue of taking zinc out of the new formulted oils, I need to know if anyone has the definitive answer for using an oil with the best protection for our beloved LT-5 that will provide the necessary protection that the old oils used to. I don't want to use a zinc additive because it has been reported that it destroys the catalytic converters.

XfireZ51 · 10-25-2009

I'm using the Castrol GTX 15W-40 Diesel. It has the levels of zinc etc that everyone's been talking about here at $4/qt. No additives necessary.

Hammer · 01-30-2011

I think I'm going to try the Valvoline VR1 10-30 next time around. High zinc and phospherous and Marc H. said it would be a good oil. Hard to get though, not readily available at the common stores, although 60w, 50w and 20-50 weight is. Weird.

xlr8nflorida · 01-30-2011

Use high mileage mobil 10W-30.

todesengel · 01-30-2011

I use amsoil

tomcat · 02-01-2011

Quote:

Originally Posted by todesengel

I use amsoil

I also use Amsoil 10W-40W. Notice the oil take longer to temp up.

Manfred E...........

91 #906

ZR-1nce removed · 02-08-2011

Amsoil has a high zinc 10w40 that alot of us use. I'm sure your local performance shop can order it for you.

Hammer · 02-28-2011

I'm switching to the Valvoline VR1 racing oil, 10-30, for the next oil change. Real high in zinc and phosphorus and Marc Haibeck said it would work well for our motors.

Z Factor · 02-28-2011

The is a link to a thread/poll which has the various oils most of us use.

http://www.zr1.net/forum/showthread.php?t=3039

Here is a related thread/poll on oil filters.

http://www.zr1.net/forum/showthread.php?t=2476

Personally I go with Mobil 1 for both.

tomtom72 · 03-01-2011

Quote:

Originally Posted by tomcat

I also use Amsoil 10W-40W. Notice the oil take longer to temp up.

Manfred E...........

91 #906

I noticed that also vs M1 10w-30, and when it's 'up to temp' the temp is a tad higher than the M1. But if I flog it thru the twisties it doesn't seem to end up at as high a reading as the 10-30 M1. If I flogged the car with the M1 for say 30 minutes the gauge would be 1/2 way, with the Amsoil it doesn't get quite to the 1/2 point. Seemed strange to me.

I did some reading over at the oil guy's site. Jim from FLA posted a link awhile back and I read the whole thing front to back. I think I'm going back to 10w-30 full synthetic.

Tom

10-25-2009	#1
soslow Join Date: Sep 2004 Location: SELDEN, NEW YORK Posts: 26	What is the best oil for the beast. With the issue of taking zinc out of the new formulted oils, I need to know if anyone has the definitive answer for using an oil with the best protection for our beloved LT-5 that will provide the necessary protection that the old oils used to. I don't want to use a zinc additive because it has been reported that it destroys the catalytic converters.

10-25-2009	#2
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,701	Re: What is the best oil for the beast. I'm using the Castrol GTX 15W-40 Diesel. It has the levels of zinc etc that everyone's been talking about here at $4/qt. No additives necessary.

01-30-2011	#3
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: What is the best oil for the beast. I think I'm going to try the Valvoline VR1 10-30 next time around. High zinc and phospherous and Marc H. said it would be a good oil. Hard to get though, not readily available at the common stores, although 60w, 50w and 20-50 weight is. Weird. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

01-30-2011	#4
xlr8nflorida Join Date: May 2008 Location: USA Posts: 1,096	Re: What is the best oil for the beast. Use high mileage mobil 10W-30.

01-30-2011	#5
todesengel Join Date: Apr 2010 Location: O'Fallon, Mo Posts: 738	Re: What is the best oil for the beast. I use amsoil

02-08-2011	#7
ZR-1nce removed Join Date: Jan 2009 Location: Gettysburg, PA Posts: 247	Re: What is the best oil for the beast. Amsoil has a high zinc 10w40 that alot of us use. I'm sure your local performance shop can order it for you. __________________ 90 ZR-1 #0951 Bright Red (sold) 06 Z51 MN6 Velocity Yellow (sold) 2023 C-8 Z51 ELB WAZOO Member

02-28-2011	#8
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: What is the best oil for the beast. I'm switching to the Valvoline VR1 racing oil, 10-30, for the next oil change. Real high in zinc and phosphorus and Marc Haibeck said it would work well for our motors. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

02-28-2011	#9
Z Factor Join Date: Dec 2003 Location: S. Florida Posts: 2,667	Re: What is the best oil for the beast. The is a link to a thread/poll which has the various oils most of us use. http://www.zr1.net/forum/showthread.php?t=3039 Here is a related thread/poll on oil filters. http://www.zr1.net/forum/showthread.php?t=2476 Personally I go with Mobil 1 for both. __________________ --- It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat. Theodore Roosevelt - April 23, 1910