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On Mon, 22 Mar 2021 20:58:50 -0400, Ed Pawlowski wrote:


On Monday, March 22, 2021 at 1:50:40 PM UTC-4, mike wrote:

I'm not complaining or even asking whether the $25/10 quarts Kirkland
fully
synthetic 5W30 SP oil is good or not as I know all about synthetic oil
advantages & disadvantages over conventional gasoline engine motor
oils.

I'm just asking if you've also found it hard to find conventional oil
by the
case at good prices (which means at your local Costco or department
store)?

My VW came with dire warnings not to put anything but the recommended
dealer oil in. But it's new enough not to leak down, so not a worry for
a while.

Conventional and synthetic oils both start with the same raw dino juice
though. The only difference is in the refining. Both have a range of
different molecular weight oils, but the synthetic has a much tighter
range.


Synthetics are superior to conventional oils. I've witnessed testing
and the difference is amazing. The test i saw showed a small engine
seizing on conventional oil at 5000 rpm but would run forever on
synthetic at 8000 rpm.

I really think people obsess about oil. Cars are scrapped for a dozen
other reason long before they fail from a failure related to the oil.
If you are using any genuine API rated oil suitable for your engine
and change it occasionally your engine will outlast the car at least
as much as the oil would affect.

You don't even need to change the oil or filter necessarily. My 73 VW
Golf/Rabbit used quite a bit of oil so I just kept adding more as required.
That car lasted me for 45 years and even then, the only reason I stopped
using it was because the floor eventually rusted thru because I was stupid
enough to not fix the known windscreen leak that produced a wet floor
after heavy rain, the car lives outside, not in a garage or carport. Never
did show any sign of engine wear, we did emissions testing of the
exhaust every year for rego renewal here.