96 GMC Sonoma, did some research, found this…
https://www.youtube.com/watch?v=Yzdy5GZQF7g
Same engine it seems, but where the fuck do you put the oil?
Looking at this, you better put the oil in a different car.
You drizzle it like salad dressing.
Drizzle it!
In the engine.
I think its on the driver side next to the brake booster, between the booster and the engine near the firewall. Worst case Ontario you can fill it through it’s dip stick hole.
It’s impossible to tell from the picture and I have no experience with it, but have you checked for a cap labeled “engine oil”? 13:10 in the video you posted
Just pour it over the engine. Make sure you give it a good thorough coat. It’ll work its way in.
I generally make sure the entire block is evenly coated in a thin layer (a shop rag helps), then stick it in the oven at 450F for an hour to let the patina cure. After a few coats you should have a nice, even surface.
A well seasoned engine shouldn’t ever stick as long as it’s maintained.
Did you sand it down to bare metal first?
Send pics, or it didn’t happen!
🤣
That’s usually what I accomplish.
The alternator doesn’t like it though
I just mix it in with the blinker fluid. 12:1 ratio
I couldn’t find the OIL cap but I found one labeled 710 but I can’t find any 710 fluid.
It should be around here:

It might be underneath some hoses or similar due to PDO. If push comes to shove, you could always use a skinny funnel and pour it down the dipstick tube…
Is that an oil cap in the right of the picture? Just in front of the duct taped intake. It’s a black cap with amber writing on it, so that’s what I suspect. If it goes directly to the engine, that’s it.
That’s power steering fluid…
Oops, don’t want that. Could you take two more pictures, I’ve from the left and one from the right? Unless that red box someone drew got it.
The red box post is where it’s supposed to be.
It’s getting dark right now and my camera sucks, so no more photos, at least not today.
This thing, right?

thats definitly steering fluid
Yeah that’s definitely not engine oil.
should be around here:

might be a little lower in the back
the other part is for steering fluid
Ya back there, on the engine itself, a black cap.


We will most certainly be looking again tomorrow…
Hey there. I had the Chevy version of this truck once upon a time. The location depends on what engine you have:
If you have a 4-cylinder, cap should be near the center on top of the engine. If it’s the 4.3L V6 the cap will be off to one side, but still on top. I think we’re looking at the v6 here.
Look for a black or yellow cap, it should say OIL.
Can’t find. Should be obvious right? But we can’t even find it ☹️
Is there any way you can take a picture of the engine from directly above it?
It should be more towards the passenger side, maybe more forward then center. It may not say oil, but rather 5w-30 or something like that.
Yes, that’s exactly where it should be, but we’ve been investigating this thing for about a half hour now. We simply can’t find it, and the one half obvious thing top side is for power steering fluid, not engine oil…
It’s getting dark right now here, no more investigating tonight.
The video link I found seems to be the same exact engine though… 🤷
You really want to change those intake boots. You can get cheap ones off ebay/aliexpress for <$50. It will ruin the engine sooner than later if you don’t.
Given they can’t find the place to pour engine oil, they probably won’t know what this means or how to do it.
Usually on the top left near that jumble of hoses where the valve cover is, there is a filler neck sticking out. I can’t see it in this picture though.
And that’s the mystery of the day, where do pour oil?
Going by all the hacky looking fixes, it may have snapped off or been removed for some reason. I’d rustle around those hoses in that area to see if you can at least see the valve cover and feel around for an opening.
Worst comes to worst you can fill it from the dipstick
can you shoot a more detailed picture from above the left upper section?
No owners manual in the glovebox? If there is, there might be a diagram in there.
There’s not even a glovebox, that was cut out and replaced with duct tape. It’s a wonder the title was still around.
Previous owner deceased, and the truck runs and all, but it’s a headache…
You can find most owners manuals PDFed online. At least for appliances, electronics, etc. I’ve never looked for an auto one…
I’m already 2 pages deep with 0 sanity left. Note this site for your own references, and of course backtrack to their home page…
usually it’s a little further behind the dipstick, although i don’t see it in the picture. do you have a better or mor detailed picture from the left side of your motor? preferably more from the top
It’s getting dark tonight, we’re gonna have to look at it again tomorrow.
At least I got a good idea where to look now…
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