Valvoline 500,000mi Synthetic vs. Traditional 2.3L Teardown Analysis Video

now they should dump restore and protect in both of them for the next 40k miles and show us what that looks like
I was thinking something along the same lines. In all honesty I expected both engines to look better. My bet is they would have had the cut the dino run engine to 5K and the synthetic run engine to 7.5K.
 
Interesting how the rubber gaskets on the synthetic oil engine were more pliable than the conventional. Something in the synthetic oil keeping them more pliable over time? Would synthetic oil prevent oil leaks over the life of the engine because of this?
Another interesting note is the cleanliness of the piston ring area for the synthetic oil engine. No stuck rings should help with less oil consumption and improved compression. The conventional rings were stuck! o_O
It was surprising to see how much varnish was built up on the compressor wheel side of the turbo! Could this be caused by increased evaporation rate of the conventional oil?
 
I was thinking something along the same lines. In all honesty I expected both engines to look better. My bet is they would have had the cut the dino run engine to 5K and the synthetic run engine to 7.5K.

They started with 10k intervals but extended them (didn't say how much though) later on. So we can't really say anything about 10k intervals.
 
They started with 10k intervals but extended them (didn't say how much though) later on. So we can't really say anything about 10k intervals.
I must have missed that part. In any event the results were not impressive, at least to me. With the resources they have maybe there should rerun the test and stick to an OCI for the entire 500K mile run then.
 
I must have missed that part. In any event the results were not impressive, at least to me. With the resources they have maybe there should rerun the test and stick to an OCI for the entire 500K mile run then.

they hinted at the longer intervals here:



and then said it in full here:



I think it took them 4 years to do this test

The car with conventional oil had a new turbo, that might have meant new coolant aswell (the synthetic oil engine had dirtier coolant circuit) but I can't really see coolant lines going to the turbos.
 
If you're planning to keep that engine for 500K miles, doing +10K miles OCI; synthetic could a better option. That's my take on the video.
 
If you're planning to keep that engine for 500K miles, doing +10K miles OCI; synthetic could a better option. That's my take on the video.

These engines had very few cold starts, very likely running 8 hours a day /5 days a week. They checked the oil level every 8 hours, likely before starting them every morning. No towing either, and it's uncertain just how hard they were run

It's not quite the same as my car does, with at least 10 cold starts a week, sometimes only barely getting up to temp etc....

So my take is 10k with synthetic under ideal circumstances, yes.
 
10k OCI is too long for conventional, so i feel like they are exceeding the limit on this oil. They didn't even bothered to show what conventional oil they were using
 
I did the math and it seems like a person would save $600-700 using conventional over the 500,000 mile period. 7-10 years of hard work in ordinary circumstances. Not much. My math may be off.
 
At least show piston bores and their cross hatch on both engines instead of one, which borderlines me of discrediting the whole video and point of the engine mechanical health, otherwise nice video. Did watched the whole thing, 1 million miles is clickbait and should be 500,000 per car.
 
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