Author Topic: Classic Car Motor Oil  (Read 18803 times)

L78 steve

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Re: Classic Car Motor Oil
« Reply #15 on: February 04, 2015, 06:27:54 PM »
All I can say John is I had a factory L78 cam go out on Rotella. I no longer trust it.
69 Z/28 Dover White. SOLD
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C. SOLD
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B

TODD

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Re: Classic Car Motor Oil
« Reply #16 on: February 05, 2015, 12:33:43 AM »
My engine builder recommended Joe Gibbs 10W30 with High Zinc Formulation @ 1200 ppm.
I'm running that with zero problems through cam break-in.

joesauer

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Re: Classic Car Motor Oil
« Reply #17 on: February 05, 2015, 05:53:05 PM »
Ditto on the Joe Gibbs "Driven Logo" motor oil.  My car (350 crate) does not like synthetics, but has run great on Joe Gibb's stuff for several years.  Get seal leaks with synthetic.

bcmiller

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Re: Classic Car Motor Oil
« Reply #18 on: February 05, 2015, 10:46:19 PM »
All I can say John is I had a factory L78 cam go out on Rotella. I no longer trust it.

Stock GM cam, stock lifters and stock valve springs? 

Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

rsr

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Re: Classic Car Motor Oil
« Reply #19 on: February 06, 2015, 01:39:23 AM »
I've had good luck with Gibb break in oil but trust Brad Penn for my higher RPM engines!

L78 steve

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Re: Classic Car Motor Oil
« Reply #20 on: February 06, 2015, 03:34:38 PM »
All I can say John is I had a factory L78 cam go out on Rotella. I no longer trust it.

Stock GM cam, stock lifters and stock valve springs? 


100% stock. 15k mile early take out L78 for a 454. The engine was disassembled checked out new rings and bearings, cam smeared with moly. Lifters installed in the same holes, pre-lubed. At 100 miles I did a valve adjustment and noticed 3 push rods were not spinning. Cam lobes looked pitted. Caught it early, no other damage.
69 Z/28 Dover White. SOLD
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C. SOLD
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B

bcmiller

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Re: Classic Car Motor Oil
« Reply #21 on: February 06, 2015, 07:00:41 PM »
Damn.  Sorry to hear that Steve.  And it is the first that I have heard of something like that using Rotella.  Do you remember was it 10-30 ?
Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

L78 steve

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Re: Classic Car Motor Oil
« Reply #22 on: February 06, 2015, 08:22:30 PM »
Damn.  Sorry to hear that Steve.  And it is the first that I have heard of something like that using Rotella.  Do you remember was it 10-30 ?

It was the 15W-40. It may not have been the cause but since I heard they lowered the Zinc level I assumed it was the reason. John Z stated they have not lowered it.
I'm running the Crane spec. cam now with air cooled engine oil with no problems yet.
69 Z/28 Dover White. SOLD
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C. SOLD
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B

JohnZ

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Re: Classic Car Motor Oil
« Reply #23 on: February 07, 2015, 07:42:16 PM »
John Z stated they have not lowered it.

Back when Rotella (and the other diesel oils) carried the old CI-4 service rating, they tested around 1300ppm zinc/phos. When CI-4 was superseded by the new CJ-4 formulation and  rating about ten years ago, the zinc/phos. content was reduced to 1200ppm. Conventional passenger car/light truck "SM" oils are limited to 800ppm zinc/phos., to protect catalytic converters.
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janobyte

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68 Z/28  born with: 302, drive line, etc..

dannystarr

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Re: Classic Car Motor Oil
« Reply #25 on: February 08, 2015, 04:30:01 AM »
I have been using the Lucas oil #049807106836. What is the Zinc content of this oil?
Car sat since '86. After getting it going I have changed the oil 6 times in the 1,200 miles I have put on it. I guess it's ok.. All stock, engine never apart... Danny

HOT ROD & CLASSIC CAR OIL
10687 SAE 10W-30 2,100
10688 SAE 10W-40 2,100
10689 SAE 20W-50 2,100

69Z28-RS

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Re: Classic Car Motor Oil
« Reply #26 on: February 08, 2015, 04:33:08 AM »
I think you may have become addicted to 'changing your oil', Danny....  Have you considered an AA group?  :)
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
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L78 steve

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Re: Classic Car Motor Oil
« Reply #27 on: February 10, 2015, 05:28:54 PM »
I have been using the Lucas oil #049807106836. What is the Zinc content of this oil?
Car sat since '86. After getting it going I have changed the oil 6 times in the 1,200 miles I have put on it. I guess it's ok.. All stock, engine never apart... Danny

HOT ROD & CLASSIC CAR OIL
10687 SAE 10W-30 2,100
10688 SAE 10W-40 2,100
10689 SAE 20W-50 2,100

Can I have your old oil?
69 Z/28 Dover White. SOLD
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C. SOLD
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B

dannystarr

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Re: Classic Car Motor Oil
« Reply #28 on: February 11, 2015, 12:20:59 AM »
 ;D  Actually belief it or not, the oil usage has dropped, and the oil is now a lot less discolored between changes. I will change it a couple more times at 500 mile increments and then see what it looks like. I may then be able to let it go 2 or 3 thousand. Also ya gotta remember my crankcase and oil pan was saturated with fuel.... Danny

L78 steve

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Re: Classic Car Motor Oil
« Reply #29 on: February 11, 2015, 01:24:24 AM »
;D  Actually belief it or not, the oil usage has dropped, and the oil is now a lot less discolored between changes. I will change it a couple more times at 500 mile increments and then see what it looks like. I may then be able to let it go 2 or 3 thousand. Also ya gotta remember my crankcase and oil pan was saturated with fuel.... Danny

This is due to parts seating in, Less blowby. Pull some hills and get some heat into it then decel and flood with oil.
69 Z/28 Dover White. SOLD
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C. SOLD
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B