Freedom Worx ... video about pre-filling filters

When I rebuilt that engine, I drilled new oil return holes. Don't recall any slot at all.

Ok, but no slots to take oill away from behind the oil ring. Oil return reliefs, anyhow the oil could not drain and it burned in place.
There were 4 drains, two on each side above the wrist pin, you can see them here:
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This caused all their engines to be oil burners to the extreme. Like as much as a quart every 200 to 500 miles. I remember the discussion on the Saturn Fans forum about the thinking behind what they did, they deviated from what works and did something unusual and it was a fail


These problems trend towards self-resolution when the engine blows up as in people forget to add oil continually.
Yes, it was a stupid design decision. Saturn "a different kind of car from a different kind of company" (who apparently forgot how to design pistons, even though it was just GM, who was doing it for a century).

The location of the 4 drains, which the large span of area without any drainback holes, setup the engine for coked rings and major oil consumption.
 
Just noticed my purolator oil filters say not to prefill on the box. Should i return and replace with ones that dont say I cant?
Does it actually say that with words, or is it just a little icon trying to depict that?
 
Obviously needs some Valvoline R&P. 🙃 😄
Those drains did not work. Multiple slots spaced evenly behind rings do work. Yet they wanted to be different, an innovative fail, and the car owners were the test subjects. Lots of people having to buy lots of oil, it was like the oil never wore out and the engines were very clean inside except for the piston rings. I did like the plastic body panels. The cars looked good and got good MPG and had decent power. Engines kept running a long time even while burning copious amounts of oil. My CC broke into pieces, and a section lodged into an exhaust pipe blocking the flow, could barely run. I figured it out. Formed a perfectly round pipe sized piece couple inches long. If I find it, will post a pic. Other one we had, I took off the CC and preemptively crushed the guts.
 
From the GM shop manual for 2024 Silverado.
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Good find. Yes clean new engine oil from a bottle is cleaner than the oil in your engine. So, it makes best sense to prefill oil filters.
No reasons to not do it. Prevents dry starts. I have read most engine wear happens when an engine starts, been discussed before.
Maybe not most, but a lot can. I personally want to lessen engine wear as much as possible.

 
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Those drains did not work. Multiple slots spaced evenly behind rings do work. Yet they wanted to be different, an innovative fail, and the car owners were the test subjects. Lots of people having to buy lots of oil, it was like the oil never wore out and the engines were very clean inside except for the piston rings. I did like the plastic body panels. The cars looked good and got good MPG and had decent power. Engines kept running a long time even while burning copious amounts of oil. My CC broke into pieces, and a section lodged into an exhaust pipe blocking the flow, could barely run. I figured it out. Formed a perfectly round pipe sized piece couple inches long. If I find it, will post a pic. Other one we had, I took off the CC and preemptively crushed the guts.
Yeah, my buddy's wife bought one, he drove the living hell out of it, he sold it to another buddy of mine, who also drove the hell out of it (and kept an eye on the oil), it was insane how durable they were.
 
Those drains did not work. Multiple slots spaced evenly behind rings do work
All the pistons I've seen have holes (not slots) drilled around the oil control ring groove. The oil is scrapped by the oil control rings and the excess oil goes through the drain holes towards the inside of the piston. If there aren't enough holes and/or they aren't big enough to drain properly, then they can gum up and stick and it's game over from there.

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All the pistons I've seen have holes (not slots) drilled around the oil control ring groove. The oil is scrapped by the oil control rings and the excess oil goes through the drain holes towards the inside of the piston. If there aren't enough holes and/or they aren't big enough to drain properly, then they can gum up and stick and it's game over from there.

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My stock OEM 1995 SL2 pistons had no holes. I drilled them.

See how clean it was with all the oil constantly being replaced

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Video about SL2 pistons having no drain holes, new replacement pistons do have them, but not factory pistons
Not my video.

What I did was drill smaller holes and then enlarged them. I did not want to score the ring lands. I prefer SLOTS as they are less likely to clog as holes. But hard to make a proper slot.

When I pulled out my pistons they were solid packed hard baked carbon in the oil control rings, totally stuck down, same as not even there. Doing nothing. Took a lot of effort to even remove the old rings.

I bought this car from an old guy in NJ, took the train up there and he met us in the train station yard. I bought it sight unseen, except for EBAY pics. It was using oil at 75,000 miles.
I bought the car for $500 and sold it for $800 at 185,000 miles. I drove it for 115,000 miles and it burned oil whole time, but it got steadily worse and worse till I couldn't stand it no more. Worried about completely running out of oil just driving around town as wife would keep driving it when oil light come on. She would come home and tell me the light was on again! I would ask her, how long was it on? And she would say a while, like every tine she stopped, started, and went around corners. I guess from the oil slopping around in the pan uncovering the pickup.

So I say you should stop and add oil, and she says you got to be kidding, I'm not going to stop just anywhere.

So I sold it as is to a dad buying a car for a young daughter who was known for wrecking cars. I told them they must add oil to the engine. But otherwise, everything worked well. And the inside was clean. it was a powerful engine, had lots of zip. The dad liked it, and I said, do you know how to work on engines, and he said yes, and I said good...

 
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