Do You SWEAR By Synthetic For Your Rides Lubricant Or You An Old Fashioned Traditionalist?

I have always used regular oil. Car is still running great @ 219k miles.

How about no engine oil electrics?

Until then synthetic wins for keeping the engine clean and lasting longer.

Back in the day my X5 E53 would last over 18,000 miles between oil changes so I had the oil changed once a year. Of course it did help that the engine contained over 8 quarts of oil.

Electrics will still need transmission oil, and extra coolant systems to keep the motor and batteries in check.

Been using Redline since the early 80's, change the oil 7.5-10k mi. never had a oil related engine problem. Keep vehicles till 200k+ most of the time. Sold E34 BMW w/275k mi. Used 1 qt per oil change.
I buy it by the 5 gal pail (cheaper)

I always switch to synthetic at 10k miles for vehicles that come from the factory with traditional oil.

001

Curious, why at 10,000 and not at 5,000 at the first opportunity?

Mechanic said 10k and it has worked well for me.

001

because the engine needs to break in first. Synthetic lubricates so good that the rings don't wear in properly. This happened to a guy I built a 302 for his 65 mustang. I filled it with 20w50 and told him to change it after 500 miles and use 20w50 again for 3k more miles before switching to synthetic. He didn't listen and went home and changed his oil to synthetic and wondered why it was using oil badly. I had to explain that the molecules are not only smaller, but the oil reduces friction so well that the rings don't seat properly and overall the engine will take much longer to break in. In the case of todays engines there are things like friction reducing coatings that make it take longer to break in than an older engine. Some cars come straight from the factory with synthetic but those cars are run on the Dyno and I think that wears them in enough to use synthetic. I could be wrong though.

The science says synthetic is better. Who cares what anyone "thinks" when there is hard evidence to demonstrate that synthetic offers better protection. Yes, it costs more, but not when the longer change intervals are factored in. Then it costs less. People who change oil less than 5000 miles, even traditional oil in most cases, are just idiots. They flush money and time down the drain because their superstition/religion/inability to comprehend basic chemistry cloud their ability to make rational decisions.

It should also be noted that sludging occurs far more frequently with standard oil than synthetic.

Especially in these newer cars with cramped engine bays and much higher temperatures in the engine bay.

Wow a deboost for stating a fact. Someone must be up past their bedtime on mommy and daddys computer.

Synthetic all the way and I gets changed at 4k miles.

Most retail synthetics are highly refined dino oil (even M1). The difference between brand conventional and synthetics have gone down over the years, especially true with 0Wxx grades. I tend to go syn to get the somewhat better capability, but with discounted M1 <$5 qt.