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#1 |
Join Date: Sep 2004
Location: SELDEN, NEW YORK
Posts: 26
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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.
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#2 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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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.
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#3 |
Join Date: Apr 2006
Location: Ideho
Posts: 2,653
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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.
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[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] |
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#4 |
![]() Join Date: May 2008
Location: USA
Posts: 1,096
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Use high mileage mobil 10W-30.
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#5 |
Join Date: Apr 2010
Location: O'Fallon, Mo
Posts: 738
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I use amsoil
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#6 |
![]() Join Date: Jan 2004
Location: Vancouver Washington
Posts: 238
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#7 |
![]() Join Date: Jan 2009
Location: Gettysburg, PA
Posts: 247
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Amsoil has a high zinc 10w40 that alot of us use. I'm sure your local performance shop can order it for you.
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90 ZR-1 #0951 Bright Red (sold) 06 Z51 MN6 Velocity Yellow (sold) 2023 C-8 Z51 ELB WAZOO Member |
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#8 |
Join Date: Apr 2006
Location: Ideho
Posts: 2,653
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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.
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[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] |
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#9 |
![]() Join Date: Dec 2003
Location: S. Florida
Posts: 2,667
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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. ![]()
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--- 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 |
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#10 | |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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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
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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