15000 mile oil?

[sportin83]

is it ok to run mobil 1 15000 mile oil. can it really last that long and not hurt the motor? i was thinkin of trying it. who still runs regular oil? who runs synthetic? what is everyone opinion? thanks

[BlenderWizard]

I'll be switching mine over to Royal Purple as soon as my oil gets here.

[99redsilverado]

i dont care what mobil 1 says, I personally would never wait that long, id go crazy...i dont think synthetic oil is all its cracked up to be, except for a waste of money...just my personal opinion so nobody jump down my throat


i think the 5w-30 the manufacturer reccomends is too thin for summers in GA, i run 10w-30 in summer and if it gets cold enough ill run 5w-30 in the winter.....i dont have piston slap.....

[jethro_3]

Have you ever tested the oil in your engine before you empty it out? Just because the color has changed does not mean that the harmful metals and other comtaminants are present. Go to the dealer and talk to the mechanic about the need to change oil at 3K and how the world is brain washed into spending dollars just because your father did it. I have seen many engines go way beyond it's planned expectancy mostly due to synthetic and changing it when it needs it not just because a mileage has been surpassed.

Each to his own.

[lamehonda]

I don't change the oil often because it breaks down, but because it gets dirt in it. I don't think that fancy synthetics are solving this problem.

[jethro_3]

Synthetics don't solve the dirt issue but it's molecular structure consistant and does not have the waxes and other petroleum pollutants that hurt the engine over time. Built up is a byproduct of comtaminants that can not be suspended and properly removed by the oiling system. If your engine is already destrying itself, no synthetic will not help you. If you are in a harsh dirty environment you will have to change your oil more nayways. What synthetic does do is provide the cleanest purist oil availible to keep your investment running longer.

[jethro_3]

Originally Posted by 99redsilverado

i think the 5w-30 the manufacturer reccomends is too thin for summers in GA, i run 10w-30 in summer and if it gets cold enough ill run 5w-30 in the winter.....i dont have piston slap.....

I don't get the logic of the 10W in the summer when the summer factor is the 30 number?????? Please explain that one.

[99redsilverado]

5w-XX is not as heavy as a 10w-XX oil.

[jeverett]

Originally Posted by 99redsilverado

i think the 5w-30 the manufacturer reccomends is too thin for summers in GA, i run 10w-30 in summer and if it gets cold enough ill run 5w-30 in the winter.....i dont have piston slap.....

I to live in GA, and I agree about the hot summers. But I still run 5w30, mainly because I just go with what the manufacturer says. I just recently switched to Valvoline high mileage synthetic...I would stop on the edge of the road and change my oil if it gets to 3000 miles if I could, I'm very picky about this. Im gunna run this synthetic to about 5000 and then change it..maybe 6000 even.

[kenny-1907]

5W30 oil acts like a 5 weight oil when cold and a 30 weight oil when hot. All oils are like this There was a thread about this very issue a while back regarding the meaning of the numbers in oil ratings. Maybe do a search and read uo more about it there.

[BlenderWizard]

Well, damn I live in GA, too. My dad NEVER changes his oil in his truck, though it does have a slight leak, so he adds a little new oil periodically. We got a used 305 v8 back in 1997 and stuck it in his truck. He has always driven the shit out of it, runs it without an air cleaner, and has had ZERO problems with it.

[twomorestrokes]

I use Mobil 1 in all of my vehicles and change it every 5-6K, whether the jug says it can go 10,000, 15,000 or 100,000,000 miles.

[TXAGG05]

Mobil 1 and an ACDELCO PF59 every 3k. I'm just traditional, and picky like Jayson. Plus I figure it costs me the same to change my oil myself with synthetic and a delco filter as it does for me to have it changed somewhere with regular oil and no-name filter. I know many will disagree with that change interval, especially with synthetic oil, but I take no chances with all the other little nuances of these trucks. I haven't had any piston slap or other funny noises from the motor in 70k.

I also run 5w30 because that's what the motor calls for. The truck has spent it's fair share of hot summer days in the desert of West Texas without incident(it's another reason I run synthetic though).

Jeb

[mrcrabbiepattie]

This topic is very opioninated....so just do what you like and don't complain how everyone takes care of there toys. But my 2 cents worth is the 3000 mile change is way over rated. 2004 silverado tells when to change it.

[99redsilverado]

yes 99 silverado does too....i dont think a single person has complained about anyone elses ways of there trucks maintanence only thing is smart one.....the trucks oil change reminder is based on RPMs.....it goes about 6000 miles between oil changes on me.....different driving characteristics, different mileage between changes.

and i ran 5w-30 for a while once i got my truck...as soon as i switched to 10w30 piston slap, spark knock, lifter tick, whatever u wanna call it stopped