At this particular site in the 'Oil Patch' a small gen-set produced electricity for a small plant. The company didn't want to spend the money at this location to have a backup gen-set so the single unti had to be as reliable as possible.
When I happened on this site this gen-set was all BUT reliable. The operators there told me every six months like clockwork the engine would blow-up, usually a crankshaft bottom end shell bearing would seize, burn itself up and that's all she wrote. I checked the battery's store to see what brand of consumables for this gen-set they used, especially the oil filter and oil, found the usual petroleum name brand oil and name brand oil filters. The air filter for the gen-set, they used the same everyday usual paper air filter that a car driving down the road would use.
So myself and an electrician tied-in a rental gen-set we'd brought with us and loaded up the remains of the grenaded gen-set to take to town. I would overhaul this gen-set... properly, as if it were to be a racing engine. In addition to the normal overhaul an engine that's worn out gets, after I had the destroyed journal on the crankshaft welded back up I had the crank properly aligned, then ground, the block line bored, decked and cylinders bored to fit oversize pistons. The generator was sent out to be re-wired as well as insulation tested, we wanted this gen-set to run reliable, as it never had before, and run reliably for a long time.
In place of the usual single full flow oil filter, I installed the Amsoil Dual Remote full flow and bypass oil filter set-up to take care of the oil filtering duties. The engine was run in on petroleum oil for the first 200 hours, then Amsoil 10w-30 Synthetic, (stock number ATM) was introduced to the engine. Every 1000 hours an oil sample was sent out, back came the results... "Amsoil oil good for continued use". And thus began 2 and a half years of weekly preventative maintenance visits to ensure everything about this engine was healthy.
The operators at this site got really nervous and started to grumble when I didn't change the Amsoil sythetic out at FOUR TIMES the maximum recommended 1000 hour oil change interval. The oil analysis reports all the while kept saying, "Amsoil oil good for continued use" and I further complimented oil analysis with on site 8 micron patch testing to visuallly verify under the microscope oil cleanliness so I was comfortable with what the oil analysis results were showing. I agreed to drain out the Amsoil that the lab that does research and development work for ESSO said was fine for continued use in the mid 5250 to 5500 hour interval. These fellows were really concerned and felt a sigh of relief when there was new oil in this little engine. None of them had ever seen an oil last this long and couldn't and didn't believe the reports.
I have to say, there was a paradigm shift going on with this engine! Things that normally wore out continued to wear out. The sparkplugs would be worn out, the sparkplug wires I would replaced with new ones, the old wires would no longer supple, bump them and they'd snap the insulation! New distributor caps and rotors, new water pump v-belts, multiple valve clearance inspections (but no need to adjust any valves), but not an Amsoil synthetic oil change. In the beginning of our 2 year run, a heat gun test showed maximum Amsoil Bypass Oil Filter life to be 1500 hours, the Amsoil bypass and Amsoil full flow filters would be changed, the oil lost topped up and on we went. Then I decided to replace the standard paper air filter with an Amsoil foam air filter Amsoil made then. This Amsoil air filter made a huge difference to the bypass oil filter life, the bypass filter now lasted and lasted so I changed the Amsoil oil, Amsoil full flow and Amsoil Bypass oil filter together, at the same time, between 5250 to 5500 hour intervals.
At 12,000 hours while the rest of the plant was down for a week for turn around, (rebuild and repair what needs to be fixed) operations wanted the engine overhauled. "WHAT! Oil analysis says there'll be practically no wear, a compression test shows only the #2 cylinder is down on compression 11%. Make you a deal, I'll remove the head, take it to town and have a 3rd party engine shop look at the head, if the head is toast, then we'll rebuild the engine, if the head only needs a quick seat grind and the rest of the head is fine, like I think it is, we'll not touch the rest of the engine... deal?"
I even bring out "under the microscope" visual inspection that confirmations exceptionally clean oil, ( the 8 micron patch test gear I have ) and it's only showing operations this exceptionally clean oil that aleviates their fear of engine failure and so on the engine will run. Management agrees as well.
So what does the shop say when they inspect this 12,000 hour head?
"All the parts here are fine, no need to replace any parts, I'll reuse everything except the valve seals, I'll have this back together for you in an hour. All I have to do to it is give the exhaust valves and seats a quick grind."
On goes the head in the same day and it and the rest of the engine then continue to run for another 7000 plus hours of totally reliable continuous 24 hours a day, 7 days a week operation before management as well as operations again get really nervous about this little engine. They'd expected it to blow up any day now for the last year and a half and now after 2 and a half years of continuous 24/7 operation, they can't take the suspense any more!
So after another year goes by and at the plants next turn-around, (full overhaul of everything that needs it), the little engine that could is disassembled by a third part mechanic with me in attendance to take pictures and measure clearances. As the mechanic is disassembling this engine, he casually asks me, "Why are we taking this engine apart? It's like new." Answer is Cont'd after all the pictures;
Hercules G1600 genset, rod cap
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This is the #3 rod cap and bearing. I plastigaged this cap so the plastigage evidence is seen just over and to the left of the oil hole.
The bearing is fine, I fitted this rod with 0.001" clearance when new. After 19,000 plus hours of continuos operation the clearance is now...
0.0015"
A half a thou wear in 19,000 hours?! |
Hercules G1600 genset, Main Journal
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This is the center journal of a three bearing crankshaft. This is not a strongly built engine, there should be 5 journals.
Even so, check-out the closeup picture below. |
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Are you kidding me?!
The plastigage indicates a clearance of about 1 and 3/4 thousands of an inch, as in 0.0017~0.0018"
I build this engine with a new fitted clearance of 0.001" and after 19,000 plus hours there isn't even a thousanths of an inch wear?! |
Hercules G1600 genset, 19,000 plus hours, cylinder cross hatch
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What cross-hatch after 19000 plus hours?!
YES
Piston ring end-gaps had almost no change! Biggest increase was the top ring end-gap, went from new fitted gap of 0.003" to 0.005".
This is still new fitted tollerances
The vertical line on the cylinder lines up with the top ring end-gap, it is not a scratch, nothing could be felt across this line with a finger nail. |
Hercules G1600 genset, Piston Ring Land Clearance -New to 19,000 plus hours
|
Top Ring |
Middle Ring |
Oil Control Ring |
New |
0.003" |
0.002" |
0.0015" |
19,000 plus hrs. |
0.005" |
0.002" |
0.0015" |
Hercules G1600 genset, 19,000 plus hours, head, valves and rockers
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The rocker area of the head is spotlessly clean after 19,000 plus hours!
There is not a single deposit anywhere. |
Hercules G1600 genset, 19,000 plus hours, bottom end
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This bottom end would something to be proud of with any engine, it's spotlessly clean.
I submit that this example is exceptional, 19,000 plus hours!
There is not a single deposit anywhere. |
Hercules G1600 genset, 19,000 plus hours, cam follower cover
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The cam follower area is a prime spot for a lesser oil to allow build up of oil related deposits.
Not here, it's spotlessly clean. |
Hercules G1600 genset, 19,000 plus hours, oil pan
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What deposits! NO!
You're looking at cork material.
Seems more care has to be taken to ensure rocker cover gasket material doesn't fall into the engine at the numerous valve clearance inspections with NO adjustments!
Obviously I'm kidding, 19,000 plus hours with 4,000 to 5,500 hour oil drain intervals? This is clean. |
Hercules G1600 genset, Oil Consumption
Petroleum 15w-40
- at end of break-in-period -
200 hours on freshly overhauled engine |
Amsoil Synthetic Oil, ATM 100%10w-30
consumption never varied thoughout
the 19,000 plus hours of operation |
One quart every 24 hours |
One quart every 48 hours |

So, just what do you say to a mechanic who asks, "Why are we taking this engine apart? It's like new."
I told him the truth, "Because the engine has over 19,000 hours on it"
"Bull**** it has!!" says the mechanic.
I say, "There's the daily log book over there, there's 2 and a half years of daily entries in it, look at this log..., and to verify the logbook is for real, there's the lead operator over there, go ask him."
And the mechanic DOES look at the log, and the mechanic DOES ask the lead operator, and the mechanic returns looking VERY disturbed.
He says, "If this gets out, we mechanics are out of a job! This kind of engine I never see lasting longer than 4,500 hours!!"
I say, "You know, you don't have to worry, I'm the one that was the king-pin in getting this company to go for Amsoil synthetic oil, Amsoil oil filtration and Amsoil air filtration, oil analysis and I'm the one that's battled to NOT have them take this engine apart until now.
Even with the results right in front of them, human failings will have this company go right back to putting in regular petroleum oil, regular oil filters and regular air filters as soon as I leave this project, even though the cost to operate this gen-set has been way less than half what it would cost using regular petroleum oil and normal oil and air filters." |
Conclusions:
When I left for other pastures, others took care of this little engine installing regular petroleum oil, standard off the shelf oil and air filters and that little engine blew-up just like clockwork every 6 months... costing the company tons in lost production, ($6,000 per hour) in unexpected lost production.
This little gen-set is an excellent example of exceptional service from what is really a cheap engine when extra steps are taken to promote its longevity. The Amsoil air filter stopped the dirt laded air with its wear causing particulate before it could enter the engine, the Amsoil bypass oil filter pulled out the very fine wear causing particulate within the engine, the Amsoil full flow oil filter easily lasted 5000 hour service intervals to catch anything big the first time it tried to circulate into the engine, the Amsoil oil filter didn't degrade and fall apart as a standard oil filter designed for 3 months and 3000 miles, (that's about 75 hours!) would do, and since the Amsoil synthetic oil was kept spotlessly clean, the long lasting capabilities of the Amsoil synthetic oil made its presence known as evidenced by the oil analysis results.
The evidence of the lack of wear going on in this engine I saw in real time right under my microscope with my own eyes, the third party mechanic and myself verified this lack of wear with plastigauge and pictures of the evidence to prove Amsoil synthetic oil and Amsoil oil and air filtration products deliver a superior performance with exceedingly long life to overhaul, in this case of a little 4 cylinder 1600cc engine that HAD to run.
The results above are but some of the evidence I accumulated in a decade in the Oil Patch that supported superior performance at lower cost of ownership than standard oil and filtration products and it is this evidence that I collected myself that represents WHY I heartily endorse Amsoil synthetic oils, Amsoi filtration products and WHY I represent Amsoil. |