Terlingueno
Fictional Western Sage
- Joined
- Dec 29, 2020
- Posts
- 465
- Reaction score
- 1,664
- Location
- Far West Texas
- First Name
- Skeeter
- Truck Year
- 1985
- Truck Model
- K20 Suburban
- Engine Size
- 350/SM465
I went to the local community market/flea market this morning to get some eggs and look at what people had. Several local guys, a couple brothers, dad and grampa (they are kinda new around here). They struck up a conversation about fixin on stuff. They also have quite a few old trucks/cars, square bodies, several 70's-80's GM cars. They tell people they are 'mechanics' but they seem to have problems keeping things on the road. So they were eyeballing my Suburban and one noticed the SM465 shifter. I told them I was fixin to change out the trans and both diffs fluids pretty soon since it's overdue for changing.
Grampa and dad started right in with the 'gotta get the right gear oil for these old trucks' schpiel. I responded that I had enough GL-5 from VP to get it done. Immediately they got loud and irritated and said 'you don't know nothin you gotta use GL-4 in that truck'. I responded with 'well I have always used GL-5 and it's been good since 1994 when I got the Suburban'. You would think I kicked their dog they got so animated about 'the wrong gear oil'. This went on for about 5 minutes and I said 'I've got the owners manual and maintenance schedule that came with the truck in the glove box and it states GL-5'. They pretty much called me a liar so I went to the glove box and showed them this:
Grampa and dad started yammering that that document is incorrect and I should use GL-4. I then told them that I also had the GM shop manual and it states the same thing. Dad starts in with I was a relying on the wrong information. Since it is only a 10 minute drive from my place to the market, I called my gal and told her I would buy her a cheeseburger for lunch if she would bring the shop manuals so I could show 'the mechanics' an actual re-printed GM document. Even after seeing the glovebox document and shop manual they insisted I was gonna ruin my transmission and differentials if I used GL-5. I said 'have a nice day', took my eggs and walked calmly away and we went to the cheeseburger place...
So for the record, here is the applicable shop manual pics:
Grampa and dad started right in with the 'gotta get the right gear oil for these old trucks' schpiel. I responded that I had enough GL-5 from VP to get it done. Immediately they got loud and irritated and said 'you don't know nothin you gotta use GL-4 in that truck'. I responded with 'well I have always used GL-5 and it's been good since 1994 when I got the Suburban'. You would think I kicked their dog they got so animated about 'the wrong gear oil'. This went on for about 5 minutes and I said 'I've got the owners manual and maintenance schedule that came with the truck in the glove box and it states GL-5'. They pretty much called me a liar so I went to the glove box and showed them this:
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Grampa and dad started yammering that that document is incorrect and I should use GL-4. I then told them that I also had the GM shop manual and it states the same thing. Dad starts in with I was a relying on the wrong information. Since it is only a 10 minute drive from my place to the market, I called my gal and told her I would buy her a cheeseburger for lunch if she would bring the shop manuals so I could show 'the mechanics' an actual re-printed GM document. Even after seeing the glovebox document and shop manual they insisted I was gonna ruin my transmission and differentials if I used GL-5. I said 'have a nice day', took my eggs and walked calmly away and we went to the cheeseburger place...
So for the record, here is the applicable shop manual pics:
You must be registered for see images attach
You must be registered for see images attach
