Nice. Looks clean.
People with high mileage vehicles who run supertech full synthetic oil
- Thread starter danjak26
- Start date
I just wanted to fully understand the 2 scenarios regarding Subaru's in this thread.
Scenario #1: danjak26 (the thread starter)'s parent's Subaru has 150,000 miles on it and was using Super Tech High Mileage Full Synthetic 0W-20 oil at 10,000 mile OCI, and posted pictures showing extremely clean internals, but danjak26 never used Valvoline R&P on his parent's Subaru. Danjak26 - please confirm this is correct.
Scenario #2: Glenda posted her pictures after the final 4th Valvoline R&P 5,000 OCI, that were also extremely clean.
Possible takeaway from this is that Super Tech High Mileage Full Synthetic can handle 10k OCI in a Subaru engine that is tough on oil,
but the Valvoline EP that Glenda used at 5k OCI could not.
Or perhaps the high engine temps in Glenda's Subaru due to mountainous driving played a role? What do you think Glenda?
Scenario #1: danjak26 (the thread starter)'s parent's Subaru has 150,000 miles on it and was using Super Tech High Mileage Full Synthetic 0W-20 oil at 10,000 mile OCI, and posted pictures showing extremely clean internals, but danjak26 never used Valvoline R&P on his parent's Subaru. Danjak26 - please confirm this is correct.
Scenario #2: Glenda posted her pictures after the final 4th Valvoline R&P 5,000 OCI, that were also extremely clean.
Possible takeaway from this is that Super Tech High Mileage Full Synthetic can handle 10k OCI in a Subaru engine that is tough on oil,
but the Valvoline EP that Glenda used at 5k OCI could not.
Or perhaps the high engine temps in Glenda's Subaru due to mountainous driving played a role? What do you think Glenda?
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I’m squarely in severe service. IMO that’s the difference. Also remember my engine has always looked spotless but my rings were not. My friend that runs low cost oil at 5k oci’s in the same conditions is getting visual deposits. Also uses oil. Now the two 3.5’s show obvious differences visually. My only guess is different base oils handle high heat differently.
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How are you seeing "extremely" clean internals? You are only seeing a miniscule shot with the camera and light..
Is this the Quaker State full synthetic cleanup with ESP? Or another one?
Yes. That was after first ESP run. 3rd run starting in a couple weeks.
She's a retired mechanic and has a borescope too. She has scoped her cylinder walls and saw oil splash.
Whoa is that second photo (deep varnish) the starting photo for the M1 ESP cleanup after QS?
Thats a friends Honda 3.5 compared to my daughter’s Acura 3.5(same engine but dealer bulk 5k oci’s). The clean up Subaru was similar but with pockets of sludge.
This. But oil wash on top of three pistons indicating stuck oil control rings.
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