# PCV history? **URL:** \ **Category:** General Discussion\ **Created:** [December 6, 2022, 11:28pm UTC](https://community.cartalk.com/t/pcv-history/187792 "2022-12-06T23:28:45Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [December 6, 2022, 11:28pm UTC](https://community.cartalk.com/t/pcv-history/187792/1 "2022-12-06T23:28:45Z")
Curious when the current & common PCV system was introduced? PCV valve etc. Is this system used world-wide? or mostly only for USA-destined vehicles? I don’t recall seeing a post here from poster outside the USA about this topic. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 6, 2022, 11:33pm UTC](https://community.cartalk.com/t/pcv-history/187792/2 "2022-12-06T23:33:38Z")
Go to Wikipedia and read the article “crankcase ventilation system”. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [December 6, 2022, 11:57pm UTC](https://community.cartalk.com/t/pcv-history/187792/3 "2022-12-06T23:57:47Z")
About the mid 1960s. Crankcase gasses used to be dumped overboard with a road draft tube. Made a nasty black stripe on the roadway. That was in Europe as well. They started redirecting gasses about the same time. ---
**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\ **Post date:** [December 7, 2022, 12:00am UTC](https://community.cartalk.com/t/pcv-history/187792/4 "2022-12-07T00:00:32Z")
My 1965 Oldsmobile had a Positive Crankcase Ventilation valve. My 1964 Oldsmobile had a Crankcase Vent valve. My 1961 Cadillac had an open Road Draft tube that just expelled the blowby out into the atmosphere. ---
**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\ **Post date:** [December 7, 2022, 12:10am UTC](https://community.cartalk.com/t/pcv-history/187792/5 "2022-12-07T00:10:23Z")
Deja vu > [@Oil Catch Can Benefits Debated - Why?](https://community.cartalk.com/t/oil-catch-can-benefits-debated-why/160533/17): > > That was called a “road draft tube”. They would leave an oily stain down the middle of road lanes. [image] > [@Driving without pcv valve](https://community.cartalk.com/t/driving-without-pcv-valve/182586): > > What would happen if you drove without a pcv valve? Short term and long term? ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [December 7, 2022, 12:41pm UTC](https://community.cartalk.com/t/pcv-history/187792/6 "2022-12-07T12:41:21Z")
My father’s '63 Plymouth had a PCV valve, as did all of the other cars sold in The US beginning with the 1963 model year. 1963 was the year that they were mandated. I recall reading an article in 1962 (in either Popular Science or Popular Mechanics) speculating that PCV valves would slightly improve gas mileage because engines would be able to combust the blow-by fumes. Obviously this concept was so new that they didn’t know what they were writing about. ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [December 7, 2022, 7:49pm UTC](https://community.cartalk.com/t/pcv-history/187792/7 "2022-12-07T19:49:16Z")
Chrysler Corp. Introduced it in 1963. Don’t know about GM or Ford. ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [December 7, 2022, 8:13pm UTC](https://community.cartalk.com/t/pcv-history/187792/8 "2022-12-07T20:13:42Z")
> [@Mustangman](#): > > Made a nasty black stripe on the roadway. Must be a lot of cars leaking oil noting black smudge on roads after a dip or bump. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [December 7, 2022, 8:24pm UTC](https://community.cartalk.com/t/pcv-history/187792/9 "2022-12-07T20:24:44Z")
I’m too lazy to look it up but seems to me my 74 olds was the first one for me. Standard tune up was plugs, points, pc , gas filter, air filter, and that canister filter. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [December 7, 2022, 8:32pm UTC](https://community.cartalk.com/t/pcv-history/187792/10 "2022-12-07T20:32:31Z")
1962 Chrysler 300H; PCV valve and alternator. ![image](https://global.discourse-cdn.com/cartalk/original/3X/4/5/457ed0e23c5f7b272822c688b0178991b18b3a2b.jpeg) ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [December 7, 2022, 8:37pm UTC](https://community.cartalk.com/t/pcv-history/187792/11 "2022-12-07T20:37:30Z")
So my 68 dart must have had one too. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [December 7, 2022, 8:41pm UTC](https://community.cartalk.com/t/pcv-history/187792/12 "2022-12-07T20:41:13Z")
> [@old\_mopar\_guy](#): > > Don’t know about GM or Ford I know that our '66 Ford Galaxie 500 had a PCV valve, but I can’t tell you exactly when Ford added that part. I am under the impression that it was a gov’t mandate as of the '63 model year, but I will concede my error if it turns out that I am wrong. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 7, 2022, 8:46pm UTC](https://community.cartalk.com/t/pcv-history/187792/13 "2022-12-07T20:46:28Z")
From the wiki article: " In 1961, California regulations required that all new cars be sold with a PCV system, therefore representing the first implementation of [vehicle emissions control]. By 1964, most new cars sold in the U.S. were so equipped by voluntary industry action so as not to have to make multiple state-specific versions of vehicles. PCV quickly became standard equipment on all vehicles worldwide because of its benefits not only in emissions reduction but also in engine internal cleanliness and oil lifespan." ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [December 7, 2022, 8:48pm UTC](https://community.cartalk.com/t/pcv-history/187792/14 "2022-12-07T20:48:50Z")
The reason I ask is b/c in photos of European classic-car engine compartments (mostly from the mid 1960’s and later), they appear to have the pcv-hose system, hose from air cleaner to valve cover, another from valve cover to carb, but I see no pcv valve. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 7, 2022, 8:52pm UTC](https://community.cartalk.com/t/pcv-history/187792/15 "2022-12-07T20:52:57Z")
Sometimes a valve may not have been used, maybe? I seem to remember replacing the filter on Fords in the air cleaner that connected directly to the valve cover by hose, no valve. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [December 7, 2022, 8:54pm UTC](https://community.cartalk.com/t/pcv-history/187792/16 "2022-12-07T20:54:27Z")
The pcv I’m thinking of plugged into the manifold. They may have capped the breather on the valve cover but not sure if that was a pcv system or not. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 7, 2022, 8:57pm UTC](https://community.cartalk.com/t/pcv-history/187792/17 "2022-12-07T20:57:30Z")
I checked, some Fords did have a breather filter that looked like this: ![image](https://global.discourse-cdn.com/cartalk/original/3X/9/a/9a0f69a9bb167f851641d51d8cc0e88ba33fcc05.png) But they also had a PCV valve. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [December 7, 2022, 8:59pm UTC](https://community.cartalk.com/t/pcv-history/187792/18 "2022-12-07T20:59:36Z")
Yes, some of those Euro cars have a separate air filter for the pcv input, rather than using the engine air cleaner. Maybe the pcv valve itself is just better hidden from view compared to more modern cars. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [December 7, 2022, 10:20pm UTC](https://community.cartalk.com/t/pcv-history/187792/19 "2022-12-07T22:20:16Z")
> [@Barkydog](#): > > oil noting black smudge on roads after a dip or bump Seems so… if a drip is hanging, the bump shakes it off. ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [December 8, 2022, 10:35am UTC](https://community.cartalk.com/t/pcv-history/187792/20 "2022-12-08T10:35:41Z")
70’s Oldsmobile ![image](https://global.discourse-cdn.com/cartalk/original/3X/f/9/f905b353446f0fdfbd9c2d7db2de6b1223a9923c.jpeg) [Next page](https://community.cartalk.com/t/pcv-history/187792.md?page=2)