Newer synthetic oils and filters can withstand the extended drain intervals. As long as the manufacturer recommends it then I’m cool with it.
If it can cover the short tripping, why wouldn't cover the highway miles?the next question becomes do mfgs. recommend the same interval for someone living in Iowa with a 60-mile, no-traffic round trip commute versus someone in Chicago with a 15-minute stop-go commute with the occasional weekend track day.
Most manufacturers and manuals have alternate recommendations for what may be considered a severe oci and what not. Also common sense has to be maintained if an individual is automotive savvy otherwise there’s many vehicles left improperly serviced.the next question becomes do mfgs. recommend the same interval for someone living in Iowa with a 60-mile, no-traffic round trip commute versus someone in Chicago with a 15-minute stop-go commute with the occasional weekend track day.
It serves them well to be conservative. It takes the owness off them and gets you into their service bays sooner. If they are suggesting 10k intervals I would be comfortable doing 12-13k miles.The manufacturer set OCI actually being conservative couldn't be possible, it's always set so that you will need a new entire car three days outside of warranty!
Our 2019 Toyota Highlander went through two engines in 8k miles. If it's a good engine that's built correctly it will be fine if not it will fail.So I am in the market for a 996 or 997 porsche 911 manual with some miles..
Also would like to upgrade my family truck / 2001 f350 superduty to a toyota land cruiser or a sequoia . Vintage around 2008 / 2010 with the 5.7 v8.
Both the porsche and toyota / lexus lx470 family have about ten thousand miles for oil changes.. I am kind of worried about buying a 200 k mile used toyota.. or a 140 k used porsche that has had 10 k mile oil changes.
Especially the porsche would have had one oil change per year.
So I am pretty old and was a mechanic a long time ago. 3000 mile to 4000 mile changes were common. The last 20 years I have done 5000 to 6000 mile changes with my trucks and cars.. audi , bmw , vw , ford and porsche.
So I am no expert on modern oils or even modern engine designs. I know direct injection can get more gas in the oil.. my opinion for myself is that oil is cheap and engines are very expensive. The porsche rebuild would cost about 15 k dollars for a 30 to 35 thousand dollar used car..
Do you believe that the ten thousand mile changes protects engines well ?? I can do a mobil 1 oil change even with the porsche large oil volume for 60 or 70 bucks.
I would be interested in your opinions.. when ford and honda and toyota a long time ago went to 5w20 or 0w30 oils I thought it was crazy too thin an oil. But now I just use it and hope the design engineers got it right.
GDI engines will not necessarily have discoloration and sludge, the oil gets very thin due to dilution, and its shaving off parts. Need to examine each part for wear, the sludge and staining might not show up.
Classical engines could go longer OCI because fuel dilution was not an issue.
Agree, but not sure its necessary to change filter more frequent. They typically run clean in modern engines, should be able to do 10k miles on a good filter.The ONLY solution is for the owners of these vehicles going to MUCH MORE frequent oil AND FILTER changes, along with going to a higher viscosity oil.
Fuel dilution of motor oil is bad. If you're changing your oil to rid your crankcase of it, you HAVE TO change the oil filter. Otherwise your are just reintroducing fuel into the crankcase that will pollute the oil you just changed. That just seems like a foolish way to save 5 minutes and $5 dollars.If its very serious dilution, perhaps.
Fuel dilution of motor oil is bad. If you're changing your oil to rid your crankcase of it, you HAVE TO change the oil filter. Otherwise your are just reintroducing fuel into the crankcase that will pollute the oil you just changed. That just seems like a foolish way to save 5 minutes and $5 dollars.
For 5% dilution, but for 2% I would not change oil filter, its not significunt