Goodbye Crane Flat Tappet. I hardly knew ye.

russhal said
Oil without enough zinc probably.

VonCramp said
So, zinc is a must even after years of service?

RustyRatRod said
Yes. Flat tappets must have zinc.

j par said
yes, zinc is a must even after breaking with a flat tappet.

Captainkirk said
I've heard much the same. New oils are low in zinc or zinc-free due to catalytic converters. Does anyone know of a zinc or high-zinc additive that can be added to standard motor oils?

RustyRatRod said
Just use a standard motor oil with high zinc content.

krazykuda said
Ask at your parts store, they can give you an additive for your oil.

buckshotbishop said
cough cough mobil 1 0w40 5w50 and 15w50 and mobil 1 racing oils have a bunch of zinc in them

younggun2.0 said
even the diesel oils like rotella are taking out the zinc. I use the brad penn oils. they are designed to work specifically with out mech. lifter cams. its $7 a qt at my local speed shop. Knowing an oil company is making an oil that is specifically designed to work with our old school cams why the heck would you use anything else?

VonCramp said
I was always told that once the cam is broken in that zinc didn't really matter. Is that incorrect?

obviously , it does matter or these people wouldn't be telling you it does.

mopar head said
From what I understand zinc does matter! But I was ignorant to this info until I got on this forum,years ago.

flyfish said
Yes, zinc does matter...but more specifically, it is the phosphate molecule that attached to the zinc that saves your bacon in a flat tappet engine...

Mopar to ya said
Flat tappets should use high zinc at all times from what I have read.

VonCramp said
I hadn't ran a high zinc oil in years. I am sure you have a witty response for that as well. I have to wonder if you literally just sit around all day waiting to jump on some guy's thread who isn't a super genius like yourself just so you can berate him and show FABO just how cool you really are.

you are the one that is picking this fight. you really should grow a pair instead of talking out your ***

CPDave said
Yep all flat tappet cams need a high zinc (ZDDP) oil to live long & prosper.

RJK3 said
Yet you feel the need to force your opinion down everyone's throat. And God forbid they seek further info.
There must be a scary beastly presence looking over your shoulder, forcing you to click on ALL of these threads?

no body was forcing anything down any bodies throat , if this were YellowBullet , I would tell you what should be forced down your throat. look at all the replies that were basically ignored. RRR was extremely polite and helpful with his first 2 replies and the OP still asked the same question again as if everybody were just talking out their asses. it gets really ******* old when people try to help people and they are just blown off like they are just posting BS. then you have 7 people saying the same thing and the OP still doesn't believe.

RJK3 said
Well, that was easy.

no its not that easy. buckle up for the long haul bud , you are just looking for it.
the way I see it , the OP has been told 12 times that a zinc rich oil is pretty much paramount in these old engines. nobody is going away , I can promise you that.
you obviously cant see the help that rusty offers around here. look at his "thank yous". yea he can be abrasive sometimes , but we all can including me , but when people just ignore the help being offered and don't like what they read and chalk it up as bullshit it gets really annoying.