Thread: Serious oil filter adapter problems

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Gary, if you look at every aftermarket adapter for relocating the oil filter they have one common feature - the o-ring seal. Moroso, Mr Gasket, Spectre, etc, etc, etc all use the same design. With all due respect, this is not the only part where holding the gasket/o-ring in proper position while jockeying the part into place is critical, but done every day. In my opinion you seem to have simply had the bad luck of a pinched o-ring, and maybe twice on different vehicles over time. Mike pointed out some very good tips for getting it on right, based on his years of working tight spaces on Harley's, that it seems to me would just about guarantee success unless your adapter is not flat, is cracked, or is a porous casting. Maybe all of the guys on the S10 and Astro forums are the experts. How about replacing that remote cooler adapter with a quality aftermarket unit, like a Moroso??

Good luck with your repair, and I'll go out to the shop.

Roger you could be right in the suggestion of replacing it with a aftermarket.I took on this job and advise knowing full well the issues Astro's and S10't have had saying to myself I am a good enough mechanic I could out smart it.And the suggestions likely would have worked.I just got to a point watching my new about 5 bucks a qt of oil on the shop floor and not having a clean drain pan, in the middle of no where,I decided to take the path I did.Deleted it.So it is repaired and running.And I thank my lucky stars I didn't blow up the engine turning this truck into junk which at this point in time would have been tragic.

I thank both of you for going down this road with me.It's that advise that I never forget.And Roger in the same hand(yeah suborn to the grave)I surely wish I could convince you about what I am telling you about the Astro/S10's history and the leaks.Roger it is just the facts.

Gary, it's an afterthought now that you've found a solution but did you know GM offered a remote oil filter specifically for your 1999 Sonoma? I found this while browsing for more info regarding your problem. The downside is.............it involves more o-rings .

Mike

Remote oil filter.gif

Remote oil filter lines.gif

Oil lines connection.gif

My brother's 4.3 S10 has a leaky oil cooler too. I wondered why they even put one on the thing, Bro sez it's probably more to warm the oil on a cold day than a cooler. Makes some sense to me.

Mike,I wonder if that is for a four wheel drive??.Mine is a RWD.The Doman replacement lines have a bar with both seals on it.

Dorman/Engine Oil Cooler - Hose (625-122) | 1999 GMC Sonoma 2WD 6 Cylinders X 4.3L SFI OHV | AutoZone.com

Same for Advance Auto parts.

The rad ends have quick connects and the 0-rings are incorporated in the screw in fittings.Which surprisingly the bottom oil line clipped in easily(harder to reach),but the top rad line took more effort.Nether ends of the lines leaked.Dry as a bone on the replacement.The one I took off on the hose end was loaded with dried crusty oil.

Some of this advise given will come into play when I swap in the 383 in the project Astro in a question if I want oil cooler lines on that.That van's main function is towing.Now that I think of it,the aftermarket remote either dual oil filter or oil cooler set-ups have the adapter bolt in place of the original location of the oil filter.Least the ones I remember seeing.

I am guessing that Pat,Jerry,and Richard who I have spoken alot about the 383 build would tell me I don't need it.But I don't really want to speak for them.It is tight quarters for air flow in the Astro,but then again just another opportunity for a leak to develop.

Gary, the information I have access to and posted is genuine GM factory info. I looked it up for your specific year, model and took a guess it was RWD. The only reason I posted the oil filter adapter and lines above was to see if you knew they were available from the factory for your Sonoma since earlier in the thread you mentioned a remote oil filter adapter. The link you posted is for replacement oil cooler lines to the radiator, my pic above is for oil filter adapter lines. I have an '03 Blazer 2wd with a 4.3 and I'm very familiar with the oil cooler, oil lines, radiator,etc, I had to replace the radiator a couple of weeks ago. The oil cooler lines with the flexible, soft hose sections were a piece of cake to connect to the rad, it was the all metal tranny lines that were a challenge to line up to the quick disconnect fittings. If I can help you again with certain GM info, let me know.

Mike

Mike now you got me confused........or this truck does.The adapter I have goes straight down like the oil filter would without a adapter.That's why it's such a problem to see the adapter O-ring.You got me now wondering if someone tampered with the truck before I got it.There isn't any bracket holding it to the frame.Tell you what.In the next couple of days I'll get batteries for the camera and take a pictures of the adapter I took off.

Gary, sorry to confuse you, that wasn't my intention. Please reread my post #36 above, especially the bold sentence.

Mike

Originally Posted by Mike52

Gary, sorry to confuse you, that wasn't my intention. Please reread my post #36 above, especially the bold sentence.

Mike

I see it now Mike.I won't give any excuses.Aside from this repair job I did,I have come to the conclusion it time for some spring cleaning in the shop,so now that the truck is back and running,I have been hauling alot of scrap to the scrap yard and well I am bushed.

I wonder if that was a option on which models and why.The strangest thing I have read was parts for high lift models.....not sure what all that entails.