Oil for old smallblock?
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Originally Posted By: Garak
Are you selling additives, now, Merk?
I was going to suggest a bottle of Justice Brothers ZDDP, but I wasn't planning on making any money off it.
Are you selling additives, now, Merk?
I was going to suggest a bottle of Justice Brothers ZDDP, but I wasn't planning on making any money off it.
Originally Posted By: zray
Been using Mobil 1 15w-50 in numerous vintage autos for over 16 years and many tens of thousands of miles. Never had a single cam / lifter failure. It has plenty of zddp (1300/1200 ppm ) for flat tappet engines.
Here is short list of cars I have used it in:
Shelby Cobra (original) 289's and 427's, Jaguar E type, big Austin Healy's, Triumph TR4. TR-6, & Spitfire. MG A & B. Shelby Mustangs, Mustangs, small and big block, Corvettes & Sting Rays, and numerous assorted domestic cars of the 1950's thru the 1970's.
Z
Those engines will tear up the cam and the rest of the valve trains with weak oils.
Been using Mobil 1 15w-50 in numerous vintage autos for over 16 years and many tens of thousands of miles. Never had a single cam / lifter failure. It has plenty of zddp (1300/1200 ppm ) for flat tappet engines.
Here is short list of cars I have used it in:
Shelby Cobra (original) 289's and 427's, Jaguar E type, big Austin Healy's, Triumph TR4. TR-6, & Spitfire. MG A & B. Shelby Mustangs, Mustangs, small and big block, Corvettes & Sting Rays, and numerous assorted domestic cars of the 1950's thru the 1970's.
Z
Those engines will tear up the cam and the rest of the valve trains with weak oils.
MolaKule
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My '87 Suburban 350 got re-cammed with a 262H and a new timing chain at 60,000 miles and I ran 5W30 conventional in it for run-in (500 miles) and 10W30 thereafter with no problems. The oil was an API SJ/SH oil at the time.
I pulled a 1.5 ton wood trailer over 700 miles at 75 mph three times a year.
I rebuilt the 700R4 transmission three times, but never did anything to the engine except for the re-camming and the timing chain.
I pulled a 1.5 ton wood trailer over 700 miles at 75 mph three times a year.
I rebuilt the 700R4 transmission three times, but never did anything to the engine except for the re-camming and the timing chain.
Originally Posted By: Merkava_4
I was going to suggest a bottle of Justice Brothers ZDDP, but I wasn't planning on making any money off it.
You know that the SBCs ate cams no matter what the zinc level was like.
I was going to suggest a bottle of Justice Brothers ZDDP, but I wasn't planning on making any money off it.
You know that the SBCs ate cams no matter what the zinc level was like.
Originally Posted By: CT8
Non roller lifters for push rod engines aren't flat they are concave . Put two together look. That is so they rotate. The OHC engines have lower spring pressures than pushrod engines.
Convex......Not concave. Worn lifters that are still spinning can sometime become concave.
The OP was asking about oil for a ROLLER LIFTER equipped SBC.......I believe all the concern for ZDDP is misplaced.
OOPS.....My misread.....Roller rockers. Carry on.
Non roller lifters for push rod engines aren't flat they are concave . Put two together look. That is so they rotate. The OHC engines have lower spring pressures than pushrod engines.
Convex......Not concave. Worn lifters that are still spinning can sometime become concave.
The OP was asking about oil for a ROLLER LIFTER equipped SBC.......I believe all the concern for ZDDP is misplaced.
OOPS.....My misread.....Roller rockers. Carry on.
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