Pressure Washing Question

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.

Old60Driver

Old60Driver

1983 K20 Silverado
Joined
May 17, 2020
Posts
242
Reaction score
301
Location
Houston
First Name
Michael
Truck Year
1983
Truck Model
K20 Silverado
Engine Size
350
Probably a stupid question, but I'm wanting to replace both diff fluids, as well as the transfer case fluid.

The old girl has quite a bit of crusted up gunk on the cases. I've done some light scrubbing, but it's on there pretty good. Can I just soak with a bit of degreaser, and pressure wash everything? Any downsides?

Data:
1983 K20
TH400
NP208
14 bolt rear
10 bolt front
 
PrairieDrifter

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,733
Reaction score
5,311
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
Do it before you change fluids just in case, and for staying clean. If you're really worried about it both the transmission and transfer case have a breather on the top of them, you can temporarily plug those for washing, a bit of a pain. I don't think it's necessary. I've never had an issue. Just don't blast straight down those breathers.

I like gunk original and super clean.
 
Old60Driver

Old60Driver

1983 K20 Silverado
Joined
May 17, 2020
Posts
242
Reaction score
301
Location
Houston
First Name
Michael
Truck Year
1983
Truck Model
K20 Silverado
Engine Size
350
PrairieDrifter said:
Do it before you change fluids just in case, and for staying clean. If you're really worried about it both the transmission and transfer case have a breather on the top of them, you can temporarily plug those for washing, a bit of a pain. I don't think it's necessary. I've never had an issue. Just don't blast straight down those breathers.

I like gunk original and super clean.
Click to expand...
Thanks Drifter! I didn't think there was any reason not too, but I'll be careful with the breathers just in case!
 
Catbox

Catbox

Full Access Member
Joined
Jul 12, 2018
Posts
4,323
Reaction score
16,048
Location
Just Outside of Portland Oregon
First Name
Peter
Truck Year
1979
Truck Model
C20 Silverado Camper Special
Engine Size
461
Just don't linger at the sealed areas and you should be fine.
 
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,102
Reaction score
7,985
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Don't know if this will help, I drilled 2 holes in a Sawzall blade and screwed it 2 a wire brush. I use the cordless Sawzall with the wire brush cuts way down on scrub time.
 
You must log in or register to reply here.

Similar threads

Old60Driver
Lift or rebuild stock?
2
Replies
17
Views
1K
RanchWelder
RanchWelder
NickTransmissions
4L80E Information Thread
Replies
3
Views
3K
RanchWelder
RanchWelder
RanchWelder
Identifying GM Transfer Cases: Show us in pictures what you have with measurments and Adapters.
2
Replies
19
Views
4K
dragstews
dragstews
Old60Driver
TH400 seems to be dragging
2 3
Replies
32
Views
4K
Old60Driver
Old60Driver
QBuff02
350 sbc thermostat question/debate..
Replies
10
Views
2K
QBuff02
QBuff02

Latest posts

Forum statistics

Threads
43,558
Posts
937,922
Members
35,452
Latest member
Fatzbear
Top