My most harrowing experience was when I bought a 1972 Chevelle "Nomad" wagon that a friend had built into a 4x4 ,using a '69 Suburban 1/2 ton chassis by shortening it to mach the wheelbase --it actually turned out to be a very good driving vehicle,despite its unusual appearance...needless to say,it attracted a lot of attention,especially the cops...it was legally registered though,and had passed the strict NH inspection regulations ,so there wasn't much they could do about it not looking "original"...
On my way home from his house,with his plates and registration still on it and in the glove box,I took off and headed for my house,about 110 miles away...he told me the engine would need a quart of oil about halfway there,it had a leaky rear main seal and valve covers..
Everything was going smoothly,till I heard lifters starting to clatter,I knew then the oil was REAL low,so I pulled it into the breakdown lane and into the dirt shoulder,well off the side of the highway...
I open the hood,go to dump in a few quarts of oil from a gallon jug,and some glurged out and spilled onto the fan (I left it running fearing it might not want to re-start !),and it got slung everywhere,much of it went onto the exhaust manifolds and pipes,and it sent a white plume of dense smoke like a tire fire out...I managed to get 2 quarts in before I nearly peuked from the fumes,and when I went to stand up,I see a state trooper right in back of me with a fire extinguisher,ready to let it rip!...

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I told him it was NOT on fire,not to use the extinguisher,I had only spilled oil everywhere and it'd burn off quickly...after the smoke dissapated,he wanted to see my license and registration...he immediately gets suspicious when he sees my name is not the one listed on the registration,so he asks me "just WHO owns this "thing"?...told him my friend did ,and legally he DID,until I sent his plates back and paid the balance I owed for him on it..
It took him a good 45 minutes to verify the plates and reg were legit,he even had the barracks call my friend and ask if he knew I was drinving "that thing" around!...he told him he did know,and he let me use it to "go to the beach"...then he finally lets me drive off,after the gas tank was now dangerously low,to make the remaining 50 mile trip...I made it to my house OK,but there was about a gallon left by the time I arrived !...
Then there was the day I got my '81 G10 van home from where I bought it--only 10 miles away,no sweat I thought....but even 10 miles can be a long trip under the right conditions..
I bought the van for 500 bucks,in 1990,when it was only 10 years old and had 130K on it...still looked very solid,hardly any rust,and an older guy owned it since new--he drove it to nova scotia several times and said it was extrememly dependable...but the tranny decided to "crap out",so he wanted to sell it and get another truck before the guy he knew sold it on him,so I wasted no time buying it "as-is"..the friend who told me about it said "dont bother trying to change the filter and fluid--I did it last week,no change!--save your money for a used TH350"...."then he said "It still drives though,in first,second,and reverse,so you'd be able to get it home ok"...
Well,I got a ride to where it was parked,got the keys,paid the guy for it,and I was off,with my pickup's plates "attatched"...I hadn't gone 200 feet when I realized it wasn't going to upshift into second gear,it tried too a few times,but then went right back into first!...
I had to go 30 mph in first gear on a 2 lane with a 50 mph limit,I thought cars were going to drive right thru it!--several came flying up behind me and slammed their brakes on,then flew past me,after oncoming cars passed by,and they flipped me off!..I hogged the right shoulder,and left the 4 way flashers on,but hated to do that,knowing it would attract a cop like a magnet if one happened by!..
Then I was maybe 5 miles from home,and the dam thing STALLS,I coasted into a parking lot and cursed my poor luck...but to my surprise,it fired up again almost instantly...so I took off again,and it died again about a mile up the road...it had a 1/2 tank of gas showing,sounded to me like the gas filter was plugging up,and me racing the engine going 30 in low was sucking the carb dry before enough gas could get to it...so I decided to go TEN mph,once I made it to the more rural streets off the 2 lane,and I made it home..no arrests!..

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I decided to change the gas filter after I got home with it..--all it had was the paper element one inside the carb,behind the big fuel line inlet nut...had to use a pipe wrench to get it off,felt like it was never replaced pnce since new!...sucked to get at too,took me a half hour just to remove the dog house so I could see the engine...once I got the filter out,it was black as ink,and it had a wasp stuck in the center of it!.

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I tossed it as far into the woods as I could,and decided to install a REAL gas filter in the steel line,and NOT put one back in the carb!--always did hate those stupid OEM filters,you'd risk stripping out the carb every time you had to unscrew that big nut thing,and they loved to leak too...had more than one GM with a fudged up carb there that leaked and started a nice blaze under the hood--didnt want that in the van with the engine sitting right next to me!..
I found out the next day,that the tranny only needed a govenor gear,so I just swapped in a used govenor from a junkyard tranny into it,and I replaced the modulator just for peace of mind,after I saw some atf drip from the hose nipple on it...that tranny is still in it,it shifted fine the whole 55K I put on it since then,I took that thing to TN,Maine,all over NY,and I put a 307 in it and its still lived on ...I still have the "good used" tranny I was given and never had to use yet for it too!...