WHAT WEIGHT OIL ARE YOU RUNNING IN THE FE's - Page 2 - Ford Truck Enthusiasts Forums

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View Poll Results: WEIGHT OIL ARE YOU RUNNING IN THE FE's
5w20
2.12%
5w30
5.51%
5w40
2.54%
10w30
27.54%
10w40
21.19%
15w40
11.86%
15w50
2.12%
20w50
16.10%
30w
10.17%
50w
0.85%
Voters: 236. You may not vote on this poll

WHAT WEIGHT OIL ARE YOU RUNNING IN THE FE's

 
  #16  
Old 10-31-2004, 09:09 PM
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Originally Posted by Hypoid
10w40 Castrol. Flows when it's c-c-cold, doesn't thin as bad as others when it's hot: brand preference based on unscientific comparisons in an air cooled motorcycle engine run in 90 to 100 degree ambient.
I agree about the brand - same type of conditions, air-cooled '83 XL600 and an '89 NX650 (both Hondas). Bad bad bad for oil, but the oil stays perfect over extended periods.

Triumph TR7's, my FE's, Ford modulars (5w30 though), etc. etc.
 
  #17  
Old 11-01-2004, 01:45 AM
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kerwat;
The 80 psi max. pressure is the pop off valve in the oil pump limiting max oil pressure. There are other springs available, but then again FE's don't like much more than 80 psi oil pressure. I use to run 100 psi springs in my race 428CJ's and 428SCJ's cause I was drag racing and the max rpm was of very short duration. All my street motors use the 80 psi spring.
 
  #18  
Old 11-02-2004, 06:15 PM
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cheap chevron 20w-50 from costco.
fl1a motorcraft filter.
oil change at 3000 miles max... lot's of dust in Az.
 
  #19  
Old 11-02-2004, 06:29 PM
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Multi weight oil is garbage... strait 30 or 50 is all you need unless it get's very cold where your at, then its handy to have multi for easy start ups. Just my opinion.
 
  #20  
Old 11-02-2004, 06:54 PM
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Originally Posted by EgoMan
Multi weight oil is garbage... strait 30 or 50 is all you need unless it get's very cold where your at, then its handy to have multi for easy start ups. Just my opinion.
I've many many times heard that from credible sources.
If I could find straight 50 weight, I'd buy it.
 
  #21  
Old 11-02-2004, 09:38 PM
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I know Valvolene has 50wt "race" oil. and i think castrol sells a strait 50 but im not sure. I used to run valvolene race weight in my 360 and it never had a problem even at below freezing temps. My father just runs 30 in the winter and 50 in the summer up in montana.
 
  #22  
Old 11-03-2004, 01:51 AM
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10w40 summer 10w30 winter.
 
  #23  
Old 11-03-2004, 02:02 AM
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[/U]Castrol 20/50 summer...10/40 winter
 
  #24  
Old 11-03-2004, 02:41 PM
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CleanLX, Napa used to have a straight 50 wt oil. But I haven't used any since I retired so they could have dropped it. You might ask them, as if it's available you could have them order you a case.
 
  #25  
Old 11-08-2004, 08:00 AM
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I run 10w30 in the summer and 5w30 in the winter but I live where the summers are like most people's winter's. It is currently -10 outside.
 
  #26  
Old 11-08-2004, 11:53 PM
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Arrow

I use 10w30 year round here in the desert southwest.

Folks...Why the high numbers???

15w40
15w50
20w50


I was trying to remember that the owner's manual for my '76 FE engine says something like 10w30 or even 10w40. I have done some research in the past and discovered the higher the weight (or number) the quicker the oil breaks down. That is why the 5w20 oil is so popular now. Just my opinion...

 
  #27  
Old 12-07-2004, 03:13 AM
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valvoline straight 30 weight. they 20-50 was too thick and was getting very high oil pressure. I have read, correct me if I am wrong, that too high oil pressure (100psi) can "wash out" the bearings. The 30 seems to work good. 25 psi at idle and 60 psi around 2000 rpm.
 
  #28  
Old 12-07-2004, 08:07 AM
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Originally Posted by biz4two
I use 10w30 year round here in the desert southwest.

Folks...Why the high numbers???

15w40
15w50
20w50


I was trying to remember that the owner's manual for my '76 FE engine says something like 10w30 or even 10w40. I have done some research in the past and discovered the higher the weight (or number) the quicker the oil breaks down. That is why the 5w20 oil is so popular now. Just my opinion...

5W20 is being used in the Ford modular because Ford REQUIRES it. And even then, some of us use 5w30 instead. The modular motors are built with different clearances then the FE's, and with over-head cams, you need thin oil to get up to the top of the heads as quick as possible on start-up.

The problem with very heavy-weight oils, for example, 20w50, is that the spread between the cold and hot viscosities is hard to do, and they use paraffin or other additivies to make up the difference. These additives break down sooner, so thicker oil seems to break down quicker - all it's doing is loosing it's 50w hot viscosity. But seriously, I never had Castrol 20w50 break down in my FE's to the point of noticing an oil pressure drop.

Too much pressure should be relieved by the oil pump relief valve - there's almost no way to go "over pressure" with a stock oil pump. If you used a high-pressure pump, well, then, yes, it's possible to blow something out, but usually, the bearing stays in it's place (if it didn't we'd all be in big trouble). High-volume oil pumps will keep pressure up longer over time, as bearing wear out - but it will have almost no effect on oil pressure on a new motor.

Again, don't compare an FE's needs with any other motor - they are notorious for low oil pressure at idle, and high-volume pumps can help with that - but it also helps to have some pretty thick oil in it - 10w40 is the LEAST I would run in an FE unless there were serious considerations made about bearing clearances and oil mods.
 
  #29  
Old 12-07-2004, 09:52 AM
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I was told by a bearing mfg. that the oil wts. & API service grades [se,sf,sg],and so on is what the bearing mfg. want you to use for the life of your bearing & ring's . They build them in a way to last so long. For the engine mfg. Ford in our case. Now, no one has addressed the API service grade that is the service duty of the oil .

Don
 
  #30  
Old 12-07-2004, 09:58 AM
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Well in my opinion Multi weight oil is garbage...50wt for 50 degrees and higher weather and 30 wt for 50 and below. Never once had a problem. My truck sat in a feild for 10 years I ran it this way since 1997 didnt have a pressure drop until a few months ago and it still doesnt really smoke at all.
 

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