(02-16-2019, 07:28 PM)Evan Wrote: Ive read some testing where synthetic oil was still doing great at 20k+ miles. Just a filter change and its good to go.
"great"? on a standard non-bypass filtration system? i'd like to see that test, genuinely curious.
from everything i've seen, by 15k miles most oils are starting to severely oxidize as a result of the additive packs being spent. they may show serviceable viscosity but that's not the whole story. i wouldn't trust any off the shelf oil to that mileage unless we're talking non-stop highway travel. particularly on a direct injected car or DI + turbo car.
equipment like big rigs can get by with 20-25k mile oil changes due to sheer oil volume and the particular additive packs they engineer into diesel oil formulations along with massive multi-filter byass systems.
(02-15-2019, 11:34 AM)turboneticsSS Wrote: But I really would prefer to keep this thread not a thread on oil change interval debate
my bad
2010 Civic Si
2019 4Runner TRD Off-Road
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Past: 03 Xterra SE 4x4 | 05 Impreza 2.5RS | 99.5 A4 Quattro 1.8T | 01 Accord EX | 90 Maxima GXE | 96 Explorer XLT
2019 4Runner TRD Off-Road
--------------------------
Past: 03 Xterra SE 4x4 | 05 Impreza 2.5RS | 99.5 A4 Quattro 1.8T | 01 Accord EX | 90 Maxima GXE | 96 Explorer XLT