The Ford Barn

4t8v8 · 10-04-2015, 03:12 PM

Fair question. A few years ago when the "no zinc" situation hit I paid little attention to it. At that time I had a friend who had a cam flatten in his OVH engine. I called a friend in the petroleum industry and asked him about it. He said the flathead would be ok but would recommend the 15W-40 diesel oil for OVH engines to be safe. One of my babies has a very warmed up 302 so I took his advice. Didn't want to keep a separate oil for each of my cars so I switched them all. This was years ago and no problems, so I am happy.

40ford · 10-05-2015, 12:09 AM

Yes,here we go with "Oil Wars" again!I thought it was all agreed upon that motor oil today is a much better quality than they were years ago.Flatheads way back did not last long before a rebuild was needed?They gummed up with sludge and was this not because of all the zinc and other additives that everyone thinks is needed now????Just a good quality 30W high detergent oil that is changed regularly has always worked for me!This is just my opinion or my 2 cents worth!Also I think here is a prime example of all the zinc and other additives left behind.I certainly don't need them!

Mr 42 · 10-05-2015, 02:04 PM

Quote:

Originally Posted by 40ford

yes,here we go with "oil wars" again!i thought it was all agreed upon that motor oil today is a much better quality than they were years ago.flatheads way back did not last long before a rebuild was needed?they gummed up with sludge and was this not because of all the zinc and other additives that everyone thinks is needed now????just a good quality 30w high detergent oil that is changed regularly has always worked for me!this is just my opinion or my 2 cents worth!also i think here is a prime example of all the zinc and other additives left behind.i certainly don't need them!

x2.

flatheadmurre · 10-05-2015, 02:22 PM

Modern oils has improved in many ways but taking away the zddp additive isnt a choice by engineers.
And the crud left in the engines are just a lack of detergent additives in past.
If you ask a Engineer to make the best oil you get a racing oil.
If you set up a lot of rules including catalythic conversion and gasmileage you get what we have today.

10-04-2015, 03:12 PM	#21
4t8v8 Senior Member Join Date: Nov 2011 Location: NW Arkansas Posts: 526	Re: ZINC additives and hardened valve seats necessary? Fair question. A few years ago when the "no zinc" situation hit I paid little attention to it. At that time I had a friend who had a cam flatten in his OVH engine. I called a friend in the petroleum industry and asked him about it. He said the flathead would be ok but would recommend the 15W-40 diesel oil for OVH engines to be safe. One of my babies has a very warmed up 302 so I took his advice. Didn't want to keep a separate oil for each of my cars so I switched them all. This was years ago and no problems, so I am happy.

10-05-2015, 12:09 AM	#22
40ford Senior Member Join Date: May 2010 Location: Cherryville,N.C. Posts: 550	Re: ZINC additives and hardened valve seats necessary? Yes,here we go with "Oil Wars" again!I thought it was all agreed upon that motor oil today is a much better quality than they were years ago.Flatheads way back did not last long before a rebuild was needed?They gummed up with sludge and was this not because of all the zinc and other additives that everyone thinks is needed now????Just a good quality 30W high detergent oil that is changed regularly has always worked for me!This is just my opinion or my 2 cents worth!Also I think here is a prime example of all the zinc and other additives left behind.I certainly don't need them!

10-05-2015, 02:22 PM	#24
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: ZINC additives and hardened valve seats necessary? Modern oils has improved in many ways but taking away the zddp additive isnt a choice by engineers. And the crud left in the engines are just a lack of detergent additives in past. If you ask a Engineer to make the best oil you get a racing oil. If you set up a lot of rules including catalythic conversion and gasmileage you get what we have today.