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Need a high zinc oil #5114430 05/24/19 10:50 AM
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tutermoe Offline OP
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Something for my 1977 350 flat tappet

thanks

Re: Need a high zinc oil [Re: tutermoe] #5114442 05/24/19 11:02 AM
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Char Baby Offline
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Is it a stock engine or has it been built ?


"Retired"
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'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Need a high zinc oil [Re: Char Baby] #5114451 05/24/19 11:12 AM
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tutermoe Offline OP
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Mostly stock, a little bump in the cam

Re: Need a high zinc oil [Re: tutermoe] #5114470 05/24/19 11:25 AM
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OVERKILL Online Content
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Originally Posted by tutermoe
Mostly stock, a little bump in the cam


Then it doesn't need a high ZDDP oil. Something like a Euro 5w-40/0w-40 would be more than adequate.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Ravenol SSL 0w-40, FRAM Ultra
Re: Need a high zinc oil [Re: tutermoe] #5114474 05/24/19 11:26 AM
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kschachn Online Content
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is there any technical evidence that a flat tappet engine requires elevated ZDDP after break-in?


1994 BMW 530i, 246K
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Re: Need a high zinc oil [Re: tutermoe] #5114478 05/24/19 11:28 AM
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WyrTwister Offline
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I have heard Penn or Gibbs ( I think ) break in oil , recommended ?


Wyr
God bless
Re: Need a high zinc oil [Re: tutermoe] #5114483 05/24/19 11:30 AM
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Buzzinhalfdozen Offline
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Grab some rotella and call it a day if you want increased zinc.


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2015 Jeep Cherokee 3.2
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Re: Need a high zinc oil [Re: tutermoe] #5114529 05/24/19 12:14 PM
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Dave Sherman Offline
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Rotella or Valvoline VR-1 would probably be fine.


2015 Honda Pilot EX AWD Valvoline 0W-20 Bosch filter
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Re: Need a high zinc oil [Re: tutermoe] #5114609 05/24/19 01:28 PM
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FordCapriDriver Offline
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Valvoline VR1 10W-30 just to be on the safe side of things.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: Need a high zinc oil [Re: tutermoe] #5114611 05/24/19 01:30 PM
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JeffKeryk Online Content
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I use Rotella T 15w40 in my classics.
There are also speciality oils out there which are top notch.

I understand the Euro blends are a good choice as well.
Unless you have really high valve spring pressure, you should be fine.


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Re: Need a high zinc oil [Re: kschachn] #5114612 05/24/19 01:32 PM
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FordCapriDriver Offline
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Originally Posted by kschachn
is there any technical evidence that a flat tappet engine requires elevated ZDDP after break-in?


Some engines have high valve spring pressures even stock and will need a good dose of Zddp even after break in.

For example the engine in my Ford Escort, it's a SOHC flat tappet Hemi engine, the stock valve springs are 235lbs at peak lift, i therefore refuse to run anythign with less than 1000ppm of Zinc in it, preferably 1100-1300.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: Need a high zinc oil [Re: tutermoe] #5114668 05/24/19 03:15 PM
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Oldtom Offline
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How about Amsoil Z-Rod? Pricey, but contains a lot of zinc and corrosion inhibitors for seldom driven classics.

Re: Need a high zinc oil [Re: tutermoe] #5114681 05/24/19 03:22 PM
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bullwinkle Offline
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An SB Chevy (unless radically built) shouldn’t need super high levels of zinc-a decent HDEO, combined with some Comp Cams break-in additive, or even Rislone zinc additive, should be plenty high enough. Hopefully you have a good aftermarket cam & lifters!


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Re: Need a high zinc oil [Re: tutermoe] #5114683 05/24/19 03:32 PM
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Rudy1999 250 Offline
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TRC 15W40 PROSPEC III WITH MOLLY 1400 PPM OF ZINC

ALSO CEN-PE-CO HAVE HEARD IS GOOD STUFF.


A Salesperson/Problem Solver
Re: Need a high zinc oil [Re: tutermoe] #5114696 05/24/19 03:45 PM
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RDY4WAR Offline
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Driven HR 10w-40 has 1400 ppm zinc, 1250 ppm phosphorus, a nice dose of moly, and a starting TBN of 10. It's $7.99/qt.


"He who is without oil, shall throw the first rod." - Compressions 9:1
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