0w-20 v. 5w-20 in 2015 5.3

[HondaHawkGT]

It's something the average owner does not need to even worry about... You could use conventional blend oils and cheap Fram filters and still be running fine....

 

 

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The average owner is also a simpleton/village idiot that gets pissed off when they start hearing lifter knock on cold starts and figures their truck is just a POS. There are plenty of cheapskates that poured conventional or cheap syn-blends in their engine and paid the consequences. BTW, there is little regulation over the term "Synthetic-blend" -- it could have 10% synthetic and reap the benefits of being labeled as "as good as full-synthetic" by the general public. Look at how many Toyota owners tried running Amsoil for huge oil intervalsbecause it was top-shelf full-syn and found out the hard way that their oil filter clogged with sludge by 10k miles. The Gen V LS has nothing related to any of the previous LS engines, so it's foolish to assume you can run the same junk oil and filer you got away with on an old vortec. Not to mention, those of us participating in this discussuin are probably the last guys to trade in their trucks because the factory tires are worn out. I can't speak for others but I don't feel like trading in constantly and living with perpetual truck payments.

[Badass69]

The average owner is also a simpleton/village idiot that gets pissed off when they start hearing lifter knock on cold starts and figures their truck is just a POS. There are plenty of cheapskates that poured conventional or cheap syn-blends in their engine and paid the consequences. BTW, there is little regulation over the term "Synthetic-blend" -- it could have 10% synthetic and reap the benefits of being labeled as "as good as full-synthetic" by the general public. Look at how many Toyota owners tried running Amsoil for huge oil intervalsbecause it was top-shelf full-syn and found out the hard way that their oil filter clogged with sludge by 10k miles. The Gen V LS has nothing related to any of the previous LS engines, so it's foolish to assume you can run the same junk oil and filer you got away with on an old vortec. Not to mention, those of us participating in this discussuin are probably the last guys to trade in their trucks because the factory tires are worn out. I can't speak for others but I don't feel like trading in constantly and living with perpetual truck payments.

The Gen 5 isn't an LS.... has nothing to do with LS'S. Parts look similar when they are torn down..... even the block looks close.... the crank..... rods..... same afm system etc..... but the LT series as they are aren't anything crazy..... Your biggest concern will be the same damn problem every direct injected engine has which is fuel dilution.... otherwise these engines are nothing special. Amsoil won't sludge an engine in 10000 miles without it having something else contaminating it.... so thats not even a concern. I don't care what you do... nor does anyone else on or off this forum board... but the reality of the situation is you and even every other member here account for nothing in the real world of ownership. These trucks will survive just like any other has in the past unless you get enough fuel running through the bottom end you have no oil lubricity left.

 

Probably more people follow the dealer recommendation than anything.... and that's like a 3000 mile oil change to make them more money. Again.... this whole topic still comes out irrelevant. Not more than 1 or 2 posters in the thread will see beyond 150000 miles with their truck... More people in this world live in perpetual payments than the few that have figured out not too..... and that doesn't mean owning the same vehicle for 15 years either.

 

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[HondaHawkGT]

The Gen 5 isn't an LS.... has nothing to do with LS'S. Parts look similar when they are torn down..... even the block looks close.... the crank..... rods..... same afm system etc..... but the LT series as they are aren't anything crazy..... Your biggest concern will be the same damn problem every direct injected engine has which is fuel dilution.... otherwise these engines are nothing special. Amsoil won't sludge an engine in 10000 miles without it having something else contaminating it.... so thats not even a concern. I don't care what you do... nor does anyone else on or off this forum board... but the reality of the situation is you and even every other member here account for nothing in the real world of ownership. These trucks will survive just like any other has in the past unless you get enough fuel running through the bottom end you have no oil lubricity left.

 

Probably more people follow the dealer recommendation than anything.... and that's like a 3000 mile oil change to make them more money. Again.... this whole topic still comes out irrelevant. Not more than 1 or 2 posters in the thread will see beyond 150000 miles with their truck... More people in this world live in perpetual payments than the few that have figured out not too..... and that doesn't mean owning the same vehicle for 15 years either.

 

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I realize that the Gen V isn't an 'LS' per say but for all intents and purposes, the "Gen V LT" is the successor to the Gen IV LS, just as the Gen III LS was the successor to the Gen II LT. I don't like referring to the Gen V's as LT's because depending on who you're talking to, you end up confusing people when they hear "LT1". GM is really needs to rethink how they name their engines. And yes I fully understand that very few parts are interchangeable between these two generations of engines.

 

My biggest concern I'm an electrical tech on call 24/7 and drive 2 miles to the plant. I make that drive atleast a dozen times each week. If I did 10,000 mile oil change intervals, most oils, even synthetics, won't be in good shape by then. That kind of driving breaks down oil additives very quickly. Obviously I could get 10,000 miles if I ran Amsoil SS, but I don't. I was using the AC Delco syn-blend that came with the "free" maintenance. Syn-blend being conventional with a dash of synthetic, I never even tried to get the 7500 miles the oil life monitor always seems to come up with.

 

As for the sludge thing, the link below is a TSB from Amsoil advising owners of certain years of cars to change their oil at the OEM's specified interval, not Amsoil's advertised 25k mile interval. How many guys ruined their engine because they didn't realize the manufacturer made changes in the design that created potential sludge issues? There are already a lot of Corvette owners noticing that the new LT1's runs quite a bit hotter than the previous engines. Some reported oil temps as high as 270-290 deg F. A truck towing a heavy load up long steep grades could cook the oil just as easily.

 

http://www.oildepot.ca/interesting-articles-tsb/tsb-using-amsoil-in-engines-with-possible-sludge-issues/

[Badass69]

That's why oil analysis is important regardless of what you run... That sludge thing is a problem from the manufacturer hence all the extended warranties they are offering so that's not the oils fault. Oil temperature is pretty well related to usage and beyond an oil pump that is more variable via solenoid control for efficiency these engines aren't something crazy special. The piston squirters can add some heat but they dont operate all the time either as they are also solenoid controlled lol. Fuel dilution is going to be their biggest problem beyond the afm junk falling apart so I would just analyze and base extended intervals off that. I don't just blindly follow manufacturer specs for anything but I like my stuff to run at least 100000 miles or so. If it's a good truck it's longer.... my poor 05 1500HD never gets to retire as these newer trucks regardless of brand seem to be just garbage... hopefully this Silverado does well. My one employee runs a 2015 Tundra I own and the rest run their own truck on contract... I own an instrumentation contracting company and the plant I am out of is about 50 miles from home so I get good long drives.... but my truck idles pretty well all day when it's cold outside so I change a little more frequently depending on what I do. I don't really worry about debates or who is the best or any of this silliness... I just test my oil and adjust change intervals based off of that.

 

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