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06-29-2020
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#1 |
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Join Date: May 2019
Location: Prescott, AZ and loving it
Posts: 229
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Oil Change
Hello Guys,
My oil change light came on which begs the question: Do I continue with using conventional oil or switch to synthetic? I have a little over 40k miles on it. If I do switch what is the procedure? Thanks in advance Joel
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[SIGPIC][/SIGPIC]1990 White/Red ZR-1 #1736 Bone Stock and staying that way (might cheat a little) 1959 MGA Twincam - sold 1967 Camaro SS 350 - stolen 1968 Camaro RS - traded in for a Vega - stupid 2002 Camaro SS SLP, rag top, last year haha - sold |
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06-29-2020
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#2 | |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Re: Oil Change
Quote:
Just my opinion and decision. 
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06-29-2020
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#3 |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,452
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Re: Oil Change
http://www.zr1specialist.com/HAT%20W...5%20Engine.pdf
https://www.amazon.com/Mityvac-7201-...-1&tag=mh0b-20 http://www.zr1specialist.com/HAT%20W...ers%202006.htm Last edited by PhillipsLT5; 06-29-2020 at 08:55 PM. |
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07-01-2020
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#4 |
 
Join Date: Sep 2016
Location: Ocala, FL
Posts: 894
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Re: Oil Change
Brad Penn synthetic blend 10/30 is reasonably priced and has a zinc level of 1500. I get it on Amazon. Even mixing with 2-3 quarts that don?t drain from the pan will leave you with plenty of protection. My opinion.
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Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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07-02-2020
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#5 |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Oil Change
Several quality full synthetic oils out there - just have to be careful of the "ZDDP" (zinc/phosphorus) levels are in/close to the levels present when the LT5 was built (early 90s) (See Marc Haibeck's article/presentation on the virtues of Amsoil he recommends for the LT5.)
I buy Marc's Amsoil by the case. I seldom drive 3000 miles in a season, which means if I change every other year it comes down to the price of a tank of 93 octane. Nothing but the best for our 2 babies! (90/91 ZR-1s) 
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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Linear Mode
