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How much make up added in 30k?

Will do. I have looked and it looks clean but without a flashlight. Hopefully the universal averages can be updated next time around for the 4.3L instead of the 5.3L as well.

I'll look into the silicon for sure. Intake seems well sealed from dirt but I'll check for sure. Thanks for the insight!

As a follow up here is the used oil sample analysis from this oil change. It is a screenshot so hopefully image is visible. Oil was sampled hot from oil pan drain hole. Universal averages show the 5.3L V8 and his is the 4.3L V6. I made him aware of it. Insolubles appear similar to previous oil...

The 07 EJ255 head gasket is MLS and not known for external oil leaks. Not saying it's impossible but I think unlikely to develop an external head gasket leak large enough to warrant replacing the head gaskets. Negligible oil consumption for the win 👍

I would love to see your engine run HPL personally. I would love to see the oil filter cut open, the used oil analysis, and the changes if any to oil consumption. I wouldn't hesitate to use m1 0w40 either like I do in most subarus I service.

Agreed. I said it confusingly but I'm referring to the kinematic viscosity cruising down the highway with warmer ambient temps and 5w30 in the sump being similar to cruising down the highway in lower ambient temps with 0w20 in the sump. I've seen maybe 3-5 degrees warmer oil temps from running...

Havent graphs been posted here showing kinematic viscosity at different temperatures? Viscosity at 200 versus 220 being roughly the same as going from an xw20 to an xw30? Similar to the OP switching to a 5w30 from a 0w20 giving a more similar kinematic viscosity as the engine runs hotter oil...

a 25 degree range is the difference between running 1 grade higher at temp. A 50 degree spread is easily 2 grades difference. I think that's significant when considering if an engine runs hotter oil temps with relation to ambient temps. If this engine ran the same oil temp it wouldn't be as...

With a properly working cooling system the OP's vehicle on highway flat ground cruise will run if similar to mine: 30 degree ambient 194 coolant 200 oil 60 degree ambient 194 coolant 210 oil 90 degree ambient 194 coolant 225 oil Plus or minus on the oil

I monitor coolant and oil temps in my 2018 Forester 2.5i 6mt and I can reassure you the coolant temperatures are well controlled even with outside temps above 100. The oil temps climb a bit but since coolant is well controlled I'm not concerned. I drove in 110 degree ambient in a climb from...

12,500 miles HPL 0w30 premium passenger car engine oil. 2018 Subaru Forester FB25 6mt. Hardly any consumption in 3500 miles since switching to newer design pcv valve from direct injection fb25. Will post more about this if it stays true.

I would like to see one of these engines run on HPL 0w16 and see how much the engine consumes over time.

It wasnt misfiring or running bad or anything either. It does have to pass inspection and emissions and it does. No lights or concerns yet. When he got it near 80k it had a code for egr flow. I cleaned the egr valve, it hasn't come back. After the first m1 0w40 oil change it had a code for the...

It may be worth checking radiator cap is holding proper pressure as well

Saw your uoa posted the other day. Impressive especially zero top off! I've been using m1 0w40 because of its reputation for slow cleaning. This van had some really dark thick varnish visible through the oil fill. The viscosity doesnt matter to me as much as the slow cleaning over time. This...

I'll post every uoa along the way if it all happens. So far I've kept it full throughout oci except this time our schedules prevented it at the end

I appreciate that. It's been right around a quart every 6,000 since he bought it, no change. I dont think the rear subframe area has more than 3 years before there are holes. If he gets 3 more years at 50-70k per year then hopefully 150k-210k more miles. When he bought it at 80k the transmission...

I check it usually every 2 weeks. It's pretty rusty. Hes got nothing to lose. Engine will outlive the van

My friends 2012 Odyssey. He drives 50-70k per year mostly rural and highway. His name is Kazu, the unit ID is Kazu Van, which is why it shows in comment section Been using Mobil 1 0w40 the past few oil changes. This oci was with the api SP version and one of the quarts of top off may have been...