Re: LPG/CNG cheaper?

[farna@xxxxxxx]

AMS oil recommends never changing if you run their dual filter system and synthetic. I was serious about never changing anything but the filter and topping off every 5K. If the oil is staying clean it won't hurt a thing. Synthetic doesn't break down like dino oil, and the additives aren't as important. Even running dino oil I'd consider the same, excpet maybe a 3-4K filter/top interval. You have none of the reasons oil is changed at short intervals!! That's why EFI and computer control brought manufacturer recommendations up to 5K-7.5K average now -- less unburned fuel and carbon in the oil. If the oil change shops weren't so greedy they'd stop advising 3K oil changes -- that's 1960s technology!! 

On May 12, 2005 Tom Jennings wrote:

> >> Cylinder wall wear is universally claimed to be minimal. No wet
> >> fuel to wash oil, no micro-abrasives from burned oil seep. Since
> >> oil also stays VASTLY less contaminated (no contest; the oil on my
> >> 200K+ mile 232 stays like-new up to 5000 miles) it continues to
> >> lube parts like a just-assembled motor.
> 
> On Wed, 11 May 2005 farna@xxxxxxx wrote:
> 
> > Heck, if it's that clean I'd run synthetic and just change the
> filter/top off every 5K or so miles. In a climate like yours where
> you change the filter at least yearly that should be fine -- maybe
> twice a year if less than 10K miles is run.
> 
> I was running up to 10K miles but it made me nervous, for no reason
> I can think of, and I've reverted back to 5000 - 6000 per change.
> I should probably just go back to 10K.
> 
> Oh, I am running only Mobil One 10w30 plus a Mobil One or NAPA
> Gold filter. I did fool around with 0w30, doesn't seem to make
> any difference.
> 
> 
> 
> 
> 
> 
> .


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