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Help me choose the best oil for a 41 Ford Flathead #4675785
02/23/18 07:45 PM
02/23/18 07:45 PM
Joined: Apr 2008
Posts: 43
North Carolina
randytrish Offline OP
randytrish  Offline OP

Joined: Apr 2008
Posts: 43
North Carolina
Hello all,
I've recently picked up a '41 ford pu with the original flathead engine. It's been in storage for 25 years and recently brought back to life. The previous owner changed the oil with a straight 30w just to get running. A friend has a simular flathead, although completely rebuilt, he runs Rotella 15/40. Engine starts and runs fine, no noise or smoke. I'm not driving it no more than a few minutes at a time to move it around. Getting some fresh oil in it first and then I'll start sorting out the rest.I do not know any of the history of the past 70 years. Thanks in advance,
Randy

Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675796
02/23/18 07:53 PM
02/23/18 07:53 PM
Joined: Mar 2017
Posts: 8,229
...
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 8,229
...
I am hoping you can post some pictures of this classic. BrocLuno is the poster with the knowledge of old engines and how to go about getting them running.


Cannot see signatures any longer so it doesn’t matter.
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675798
02/23/18 07:54 PM
02/23/18 07:54 PM
Joined: Oct 2009
Posts: 4,028
Wet side WA
JohnnyJohnson Online content
JohnnyJohnson  Online Content

Joined: Oct 2009
Posts: 4,028
Wet side WA
Any oil you put in it will be better than the choices in 1941. If it's stock I'd just use 5w-30.


2004 Corolla 130005
Out: EDGE EP 5W-30 Bosch 3311 7156 Miles
In: Havoline Pro DS 10w-30 Purolator PureOne 3-14-19 129693
2006 Duramax 74725
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675806
02/23/18 08:04 PM
02/23/18 08:04 PM
Joined: Apr 2008
Posts: 43
North Carolina
randytrish Offline OP
randytrish  Offline OP

Joined: Apr 2008
Posts: 43
North Carolina

Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675810
02/23/18 08:05 PM
02/23/18 08:05 PM
Joined: Nov 2006
Posts: 21,252
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,252
MA, Mittelfranken.de


ASE L1, Master. Deutsch Meisterbrief.
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675852
02/23/18 08:51 PM
02/23/18 08:51 PM
Joined: Mar 2017
Posts: 8,229
...
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 8,229
...
Originally Posted By: randytrish





That is a beauty and in great shape.


Cannot see signatures any longer so it doesn’t matter.
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675862
02/23/18 09:02 PM
02/23/18 09:02 PM
Joined: Apr 2008
Posts: 43
North Carolina
randytrish Offline OP
randytrish  Offline OP

Joined: Apr 2008
Posts: 43
North Carolina
Thanks. It is in fantastic condition. Fully stock exept 12v conversion. Kind of a sad story behind it. The Dad bought it in the mid 60's, drove and enjoyed it. Decided to have it restored in the mid 90's. Got cancer and past away before it was completed. The family kept it stored since '95. I told his son I would get it back going and enjoy it.

Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675873
02/23/18 09:13 PM
02/23/18 09:13 PM
Joined: Apr 2004
Posts: 3,681
los angeles
daves66nova Offline
daves66nova  Offline

Joined: Apr 2004
Posts: 3,681
los angeles
Add STP Engine oil treatment. It has Zinc.


THIS SPACE FOR RENT, PLEASE PM ME.
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675881
02/23/18 09:20 PM
02/23/18 09:20 PM
Joined: Jun 2011
Posts: 1,833
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline

Joined: Jun 2011
Posts: 1,833
Crawfordville FL
An HDEO for greater zddp. Rotella T4 would do nicely


2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675896
02/23/18 09:32 PM
02/23/18 09:32 PM
Joined: Apr 2008
Posts: 43
North Carolina
randytrish Offline OP
randytrish  Offline OP

Joined: Apr 2008
Posts: 43
North Carolina
I've got Rotella T4 15/40. Wasn't sure about a multi weight. Wanted to get some opions here first.

Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675902
02/23/18 09:42 PM
02/23/18 09:42 PM
Joined: Oct 2010
Posts: 9,529
Virginia Beach
Astro14 Offline
Astro14  Offline

Joined: Oct 2010
Posts: 9,529
Virginia Beach
Originally Posted By: randytrish
I've got Rotella T4 15/40. Wasn't sure about a multi weight. Wanted to get some opions here first.


For an engine as modern as that (metal shell bearings instead of babbit, downdraft carburetor), Rotella 15/40 would be a great choice.

Let me know if you get something thats really old...

grin


32 Packard 15W40
02 Volvo V70 T5 0W40 M1
02 Volvo V70 XC 0W40 Edge
05 MB S600 0W40 M1
16 Tundra 1794 5W30 Pennzoil Ultra
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4675978
02/23/18 11:04 PM
02/23/18 11:04 PM
Joined: Dec 2016
Posts: 8,017
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,017
Waco, TX
In these very old (pre-1960) engines, I like Rotella T1 (straight 30 HDEO) or Traveler (Tractor Supply TSC) straight 30 HDEO.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4676053
02/24/18 01:21 AM
02/24/18 01:21 AM
Joined: Jan 2018
Posts: 905
San Antonio, TX
das_peikko Online content
das_peikko  Online Content

Joined: Jan 2018
Posts: 905
San Antonio, TX
15W/40 is good. Something with ZDDP. You could even go Joe Gibbs or Brad Penn if you want to get fancy.

Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4676083
02/24/18 04:33 AM
02/24/18 04:33 AM
Joined: Dec 2013
Posts: 2,302
Alabama, United States
Red91 Offline
Red91  Offline

Joined: Dec 2013
Posts: 2,302
Alabama, United States
Plain ol HD 30. Supertech comes to mind. We used to have a customer(passed on) who was a huge flathead nut. He knew them inside and out, and collected everything from bone stock to about as built as you could build one. He even had a couple or three Ardun overhead valve conversions. He ran Valvoline 30. Not VR1, just regular conventional.


05 Chevy Impala
3.4 V6
Pit crew QS 10/30
Re: Help me choose the best oil for a 41 Ford Flathead [Re: randytrish] #4676090
02/24/18 05:33 AM
02/24/18 05:33 AM
Joined: Apr 2008
Posts: 43
North Carolina
randytrish Offline OP
randytrish  Offline OP

Joined: Apr 2008
Posts: 43
North Carolina
Thanks for the responses. I understand about the need for the ZDDP. I was more curious about the need for a multi weight.

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