Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-19-2012, 01:13 PM
Oldanvilyoungsmith Oldanvilyoungsmith is offline
New User
 
Join Date: Aug 2012
Posts: 11
Oldanvilyoungsmith is starting off with a positive reputation.
What oil for 81 F100?

Hey guys, I'm new here, I think this is the right forum for this, but feel free to give me the boot if it isn't. But I've got a question for ya'll.

About two months ago I got a 1981 F100 stepside, and I want to go ahead and do an oil change soon, but I've looked all over the interwebz, and can't find what kind of oil I should use. Does it really matter too much, or should I just use a basic intermediate kind like 10w30?

Thanks guys, Stephen.


If I can figure it out (gimme a few minutes) I'll post a pic or two of the truck, cuz I know everybody loves looking at a truck.
Reply With Quote
  #2  
Old 09-19-2012, 01:24 PM
Oldanvilyoungsmith Oldanvilyoungsmith is offline
New User
 
Join Date: Aug 2012
Posts: 11
Oldanvilyoungsmith is starting off with a positive reputation.
Also, forgot to say, the engine is a straight six, 3spd w/overdrive.


Click the image to open in full size.
Reply With Quote
  #3  
Old 09-19-2012, 02:06 PM
Grubbworm's Avatar
Grubbworm Grubbworm is offline
Postmaster
 
Join Date: Apr 2010
Location: Acworth, GA
Posts: 2,935
Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.
theGrubbworms JoEllen Grubbs
Welcome to the forum, that's a nice looking truck. I use Motorcraft Syn-blend 5w20. On my next oil change I am thinking about using the synthetic Rotella T. And as always a FL1A Motorcraft oil filter. But, you can always use whichever oil and filter that works best for you.
__________________
Dave's
1985 Ford F-150 4x2 (pictures),
4.9L 300 I6 / TOD 4spd / 8.8-3.08
Troubleshooting help, for anyone that needs it.
Reward good advice with a note by clicking the left red "Add to Reputation"
button right of the word "permalink" top right of the poster's message.
Reply With Quote
  #4  
Old 09-19-2012, 02:18 PM
Beechkid Beechkid is offline
Moderator
 
Join Date: Aug 2002
Location: Southern California
Posts: 3,265
Beechkid is a splendid one to beholdBeechkid is a splendid one to beholdBeechkid is a splendid one to beholdBeechkid is a splendid one to beholdBeechkid is a splendid one to beholdBeechkid is a splendid one to behold
because the engine has (I'm assuming) over 150,000 miles, I think I would suggest a 5-30 or 0-30 weight oil.....the increased viscocity (30) will help with the "wear points" in the engine.
__________________
Member: Never trust a person over 40 who drives a Chevy club
Flatheads ain't so bad!
Certified backyard mechanic I & II
Reply With Quote
  #5  
Old 09-19-2012, 03:52 PM
1986F150six 1986F150six is offline
Postmaster
 
Join Date: Jul 2009
Location: Sheffield, AL
Posts: 2,781
1986F150six has a great reputation on FTE.1986F150six has a great reputation on FTE.1986F150six has a great reputation on FTE.1986F150six has a great reputation on FTE.1986F150six has a great reputation on FTE.1986F150six has a great reputation on FTE.
Welcome to the forum! And, yes, that is a very nice truck.

Everyone has their own opinion regarding the "best" oil and filter. Get a good 10W30 and a Motorcraft FL1A, WIX or Napa Gold oil filter and you are good to go.

By the way, the 4.9L requires 6 quarts with a filter change.
Reply With Quote
  #6  
Old 09-19-2012, 07:00 PM
81-F-150-Explorer 81-F-150-Explorer is offline
Post Fiend
 
Join Date: Jul 2004
Location: Northern California
Posts: 8,791
81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold
I wouldn't use a 5w-30 or 0w-30 in these engines, especially with an older engine broke in with 10w-30 or 10w-40 etc...

You can use synthetics if you want, but I'd follow the owners manual recommendations when it comes to viscosity.

Click the image to open in full size.
Reply With Quote
  #7  
Old 09-19-2012, 08:31 PM
1983F1503004x4 1983F1503004x4 is offline
Posting Guru
 
Join Date: Jul 2011
Location: South Carolina
Posts: 1,908
1983F1503004x4 has a very good reputation on FTE.1983F1503004x4 has a very good reputation on FTE.1983F1503004x4 has a very good reputation on FTE.
I wouldn't use synthetics at ALL on a motor broke in and run for over 50K+ miles on conventional Dino oil. It might work just fine and all, but the typical rule of thumb is to break in a new motor with Dino oil then switch to synthetic and run that the rest of it's life. If it has been on Dino oil its whole life, keep it on Dino oil. Just keep up with your oil changes and you should be just fine for the life of the truck.

If I remember right, on our straight-6's, the factory oil viscosity is 10W30. I put 10W40 Valvoline dino oil in mine. Do not use a Fram filter. Use a Purolator or a Motorcraft (or equivalent). Find one that has the check valve in it to keep the motor oil up in the motor as well. It helps keep oil up in the motor after it's shut of so it's easier on wear and tear whenever you crank it back up.

I've heard quite a few people say on high mileage motors (200K+) that they use and recommend heavier weight oils to keep up the lubricity. A relative of mine has a Dodge Ram nearing 200K and he uses 20W50 in his and doesn't burn a drop of oil. Oil pressure is good. He's also an old school drag racer, and he also recommends keeping synthetic out of a motor run on dino oil its whole life.

Like was stated, it's all preference, but that's my $0.02.

But yes, stay away from anything lower than 10W30. That's too low weight.
__________________
"The mighty-6, 300 cubic inches of Spartan power!"

Quote:
Originally Posted by Fordzilla80 View Post
I'd watch your truck if I were you. You might just wake up to find your axle beams trussed.
Quote:
Originally Posted by 85lebaront2 View Post
I wanted to leave something for you to do to keep your poor brain from atrophying.
Reply With Quote
  #8  
Old 09-20-2012, 12:49 PM
81-F-150-Explorer 81-F-150-Explorer is offline
Post Fiend
 
Join Date: Jul 2004
Location: Northern California
Posts: 8,791
81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold
Yes, if your motor has a lot of wear, a 10w-50 or even a 20w-50 will make up for the differences in clearances due to wear. If your vehicle starts to behave like it's burning a little oil, switching to a heavier viscosity will help with that issue.

Also one thing I forgot to mention, you should use an oil that has higher ZDDP, or zinc. As the newer oils rated SM or higher have dropped their amount of ZDDP due to emissions reasons. Those newer oils tend to harm older engines because of the lack of ZDDP. Newer oils tend to be low in ZDDP.
Reply With Quote
  #9  
Old 09-20-2012, 01:22 PM
80FlareSide's Avatar
80FlareSide 80FlareSide is offline
Senior User
 
Join Date: Jul 2010
Location: Connecticut
Posts: 205
80FlareSide is starting off with a positive reputation.
I have an 80 with a 302. Ive put nothing but Rotella 10W40 in since i bought it. I remember choosing it bc I was told it has a bit higher zinc content for those lifters, but who knows. Either way it has worked well for me, just have to make sure Im a bit more warmed up in the winter.
__________________
"There are only three real sports: bull-fighting, car racing and mountain climbing. All the others are mere games." ~ Ernest Hemingway
Reply With Quote
  #10  
Old 09-20-2012, 11:25 PM
orkinman orkinman is offline
New User
 
Join Date: Jul 2011
Posts: 9
orkinman is starting off with a positive reputation.
there are some very good resources on this forum about oils but like several have said already, stick with conventional 10w 30 if that is what its been running on. STAY AWAY FROM PENSOIL!!! anything coming from a shell or mobile 1 refinery are pretty good. before i swapped in a new 300-6 my old one needed 15w-40 rotella to keep the main bearings lubed.
Reply With Quote
  #11  
Old 09-21-2012, 09:59 AM
Oldanvilyoungsmith Oldanvilyoungsmith is offline
New User
 
Join Date: Aug 2012
Posts: 11
Oldanvilyoungsmith is starting off with a positive reputation.
Hey guys, thanks for the help, I just did the oil change last night, went with non synth 10w30.
Reply With Quote
Old 09-21-2012, 09:59 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wood Bed Refinishing... Oldanvilyoungsmith 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 6 03-12-2013 07:25 PM
Bed Side stakes pictures Stephen67 1948 - 1956 F1, F100 & Larger F-Series Trucks 28 08-04-2012 11:27 PM
New front bumper (pics) Stephen67 1948 - 1956 F1, F100 & Larger F-Series Trucks 3 03-16-2012 12:43 AM
Maiden Voyage (pics) Stephen67 1948 - 1956 F1, F100 & Larger F-Series Trucks 38 07-12-2010 01:04 AM
Some of the old Ford trucks around town (pics) Stephen67 1948 - 1956 F1, F100 & Larger F-Series Trucks 26 05-05-2009 07:35 PM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 10:27 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup