Cali against 3K oil changes
- Thread starter Big Papa
- Start date
ptschram
Well-known member
No, no, no! Extending oil change frequency may well end up resulting in a greater energy use as we may have to replace vehicles more often.
Bad policy!!!
Oil's cheap compared to all of the problems that are caused by not changing it frequently.
Bad policy!!!
Oil's cheap compared to all of the problems that are caused by not changing it frequently.
Not changing oil is cheap compared to all the fuckups that are caused by changing oil frequently at drive-through oil change places.ptschram said:
I'll be the contrarian...
5-7K should be the norm. 10K if you are using synthetic oils.
I use synthetic and change at ~7K (6mo on average) on all my cars. My "Into to Powertrains" lab instructor was an old school dirt track racer (and sold Amsoil on the side). He said syn oils would easily go to 20K (replace the filter at 10K). That was 20 years ago.
Also, in that class, we were told that oil specs were constantly being improved. See the definative "Oil thread" by Chris St. Louis
5-7K should be the norm. 10K if you are using synthetic oils.
I use synthetic and change at ~7K (6mo on average) on all my cars. My "Into to Powertrains" lab instructor was an old school dirt track racer (and sold Amsoil on the side). He said syn oils would easily go to 20K (replace the filter at 10K). That was 20 years ago.
Also, in that class, we were told that oil specs were constantly being improved. See the definative "Oil thread" by Chris St. Louis
wheelen disco said:
I sell it nearly every time. No need to be wasteful, after all.
Cheers,
Kennith
...even though almost no manufacturer requires such an aggressive oil-change schedule.
That's not exactly a surprise.
"Drivers have a number of ways to reduce the environmental impact of their vehicles, which can also save them money,"
It's going to sell one way or another, jackass. A good amount of it ends up being recycled, anyway.
It made sense years ago, when "we had cast-iron block engines with cast-iron pistons that would expand when they got hot and older lubricants,"
Really? Perhaps he should have a look at the thermal expansion figures of the two metals. Kirk to driver: "And double dumb-ass on you!"
"Our new generation of engines have tighter internal tolerances, which reduces the amount of carbon and other products from combustion that gets into the oil,"
The agency and other groups said slashing motor-oil consumption would be good for the environment and won't hurt the longevity or reliability of autos.
Yeah... That's always been a bullshit excuse, and it's always been less than accurate.
I'm having a laugh. The glass tops on their electric ranges are probably more shit up than my valves will ever be, and I'm talking about a 4.0 RV8, here. I wonder how much carbon is gumming up their engines?
It's about how important your engine is to you, not how important it is to some jackass that spent too much time in college and not enough time doing things where a solid engine is important.
If your only car is under warranty, covered by AAA, is washed in one of those automatic things, and you find driving a thousand miles is a hassle, you've got no business telling me how often I need to change my oil.
Cheers,
Kennith
That's not exactly a surprise.
"Drivers have a number of ways to reduce the environmental impact of their vehicles, which can also save them money,"
It's going to sell one way or another, jackass. A good amount of it ends up being recycled, anyway.
It made sense years ago, when "we had cast-iron block engines with cast-iron pistons that would expand when they got hot and older lubricants,"
Really? Perhaps he should have a look at the thermal expansion figures of the two metals. Kirk to driver: "And double dumb-ass on you!"
"Our new generation of engines have tighter internal tolerances, which reduces the amount of carbon and other products from combustion that gets into the oil,"
The agency and other groups said slashing motor-oil consumption would be good for the environment and won't hurt the longevity or reliability of autos.
Yeah... That's always been a bullshit excuse, and it's always been less than accurate.
I'm having a laugh. The glass tops on their electric ranges are probably more shit up than my valves will ever be, and I'm talking about a 4.0 RV8, here. I wonder how much carbon is gumming up their engines?
It's about how important your engine is to you, not how important it is to some jackass that spent too much time in college and not enough time doing things where a solid engine is important.
If your only car is under warranty, covered by AAA, is washed in one of those automatic things, and you find driving a thousand miles is a hassle, you've got no business telling me how often I need to change my oil.
Cheers,
Kennith
kennith said:
Exactly.
The reason the manufacturers changed their oil service intervals was because it looks better on paper to the bean counters.
If your new Land Rover only *requires* oil changes every 7500 miles, this lowers the cost of maintenance.
Wow.
Change it every 3-4K.
ptschram
Well-known member
SGaynor said:
Intro to powertrains? I thought you were a PhD chemist? I never had such a class when i was pursuing my chemistry education.
My issue is that the same amount of combustion by-products are being introduced to the crankcase, regardless of the oil one uses. These combustion by-products are corrosive and will damage internal components. Do we really want to allow the concentration of these contaminants to increase unchecked when a simple oil change will reduce the concentration and the damage they can do?
Changing oil every 3K is old. Better oils, better engines. I'd rather not listen to the folks at Jiffy Lube. Good mechanics I know say no earlier than 5K and 7-10K with syn.
ptschram
Well-known member
An old business partner of mine owned several Valvoline Instant Oil Changes. This was when they were just getting popular. He wasn't making shit on oil changes of course. Once he starting pushing his guys to up sell all the crap (flushes, wipers, filters, etc) they started making money. Seems as though the prices have gone up significantly since then though.