Can I use this hole for filling oil?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Grit dog

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
7,109
Reaction score
12,542
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Must be the same valve covers they bought for my 77 when the engine was rebuilt. It doesn’t have an 710 cap. Or an oil cap lol.
I didn’t even notice it when I bought the truck and recently changed the oil for the first time and was like ???
Yes it’ll pour in thru a breather hole.
 
78C10BigTen

78C10BigTen

Full Access Member
Joined
Apr 12, 2017
Posts
16,045
Reaction score
25,672
Location
pennsylvannia
First Name
Ted
Truck Year
1978
Truck Model
C10 BIG TEN
Engine Size
350
PrairieDrifter said:
Dang lol. I would never :rofl:
Click to expand...
Granted, not my square... it was my square 91 s10 lol. But once i did change the oil it smoked like an ol Wh00R3 once i let it idle so... im more apt to not change the oil because then it wont smoke lol
 
bucket

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,639
Reaction score
28,943
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Grit dog said:
Must be the same valve covers they bought for my 77 when the engine was rebuilt. It doesn’t have an 710 cap. Or an oil cap lol.
I didn’t even notice it when I bought the truck and recently changed the oil for the first time and was like ???
Yes it’ll pour in thru a breather hole.
Click to expand...

I only mentioned the slow fill because I didn't want to tell him "yeah, it'll be fine" and then he had a slow fill, lol. It's not very often it happens, but it can happen, so I mentioned it.
 
Grit dog

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
7,109
Reaction score
12,542
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
bucket said:
I only mentioned the slow fill because I didn't want to tell him "yeah, it'll be fine" and then he had a slow fill, lol. It's not very often it happens, but it can happen, so I mentioned it.
Click to expand...
For sure. Wasn’t disputing that.
 
PrairieDrifter

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,878
Reaction score
5,713
Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
78C10BigTen said:
Granted, not my square... it was my square 91 s10 lol. But once i did change the oil it smoked like an ol Wh00R3 once i let it idle so... im more apt to not change the oil because then it wont smoke lol
Click to expand...
Hey whatever works! A beater engine is a beater engine lol. Not knockin ya, I had a daily that I added oil when it started clattering, because the engine vibrations broke the dipstick tube off in the block and I was NOT gonna do that job lol
 
Sgt Gus

Sgt Gus

Full Access Member
Joined
Aug 2, 2023
Posts
318
Reaction score
476
Location
Texas
First Name
Mark
Truck Year
87
Truck Model
R20 3/4 ton
Engine Size
454ci/7.4L
Looks like our PO drilled a couple holes in the breather side baffle. I do know breather filter was pretty dirty/oily.
I don't have a pic of baffle side.
 

Attachments

  • 20230811_105108.jpg
    20230811_105108.jpg
    186.7 KB · Views: 18
J

JBswth

Full Access Member
Joined
Jan 24, 2022
Posts
236
Reaction score
194
Location
Vallejo, California
First Name
James
Truck Year
1973
Truck Model
C25
Engine Size
292 cubic inches
Truck82 said:
Thanks guys! I guess I’ll just have to wait a minute or two longer when filling up with oil. Good thing it only gets changed every 10,000 miles anyway…. ;)
Click to expand...
You are NEVER supposed to go 10,000 miles between oil changes, unless you really like frequently rebuilding your engine.

J. B.
 
Truck82

Truck82

Full Access Member
Joined
Nov 2, 2024
Posts
211
Reaction score
422
Location
Alderton
First Name
Christopher
Truck Year
1982
Truck Model
c20
Engine Size
350
JBswth said:
You are NEVER supposed to go 10,000 miles between oil changes, unless you really like frequently rebuilding your engine.

J. B.
Click to expand...
That’s what new car manufacturers claim on their cars. I was using it as a joke because it’s SO unreal. Rebuilding engines is something I enjoy though! Still would never let any engine get past 3,000 without an oil change just to have an excuse to rebuild it.
 
Truck82

Truck82

Full Access Member
Joined
Nov 2, 2024
Posts
211
Reaction score
422
Location
Alderton
First Name
Christopher
Truck Year
1982
Truck Model
c20
Engine Size
350
Grit dog said:
Must be the same valve covers they bought for my 77 when the engine was rebuilt. It doesn’t have an 710 cap. Or an oil cap lol.
I didn’t even notice it when I bought the truck and recently changed the oil for the first time and was like ???
Yes it’ll pour in thru a breather hole.
Click to expand...
How slow was it? It’s not a problem for me to wait a minute or two more when filling oil but just wondering.
 
You must log in or register to reply here.

Similar threads

T
What is this hole for?
Replies
7
Views
1K
Toad455
T
BRetty
Found the oil leak - front oil pan seal or timing cover gasket?
Replies
3
Views
243
75gmck25
75gmck25
Ryanbrown36
transmission/oil cooler lines
Replies
9
Views
658
Matt69olds
Matt69olds
mxer147
Please help me solve this riddle
Replies
7
Views
628
77Dmax
7
D
Does anyone know where I can find this replacement lens for the parking brake?
Replies
5
Views
696
K5ride
K5ride

Latest posts

Forum statistics

Threads
44,426
Posts
957,666
Members
36,790
Latest member
fastkid118
Top