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2022 Acadia SLE, 40,000 kms on car. Off; 235/55R20 Canadian Tire branded Cooper winter snow flake symbol on the stock 20x8 +50 offset wheels. On; 245/70R17E General Arctic on Ruffino Demon 17x8 +35 offset. West coast car, Sea to Sky highway between Whistler and Vancouver 3-4x a week. The stock...

Buy a pail of PAO 460 and add 10% to every oil change.

2014 F350 6.2L gasoline engine. Kms on truck, 237,000 Kms on oil 7,300 (4,500 miles) Out; Delo 400 5W40 & TG filter In; Pennzoil Platinum Euro 5W40 A3/B4 & TG. One litre added at 4,600 kms, oil was down half a litre @ 7,300. With 5W20, the engine was using a litre every 1,200 kms.

If Diesel specific oil increases wear, then Diesel engines would wear out just from the oil alone. Since Diesel engines last forever, sometimes decades running 24/7, I’m not buying it. I have a deleted LML. The oil stays clean looking until the OLM runs out. My best UOA on that engine...

Did Cummins go back to mechanical lifters on the 6.7, or are they still the ill fated hydraulic ones? Nevertheless Delo 5w40 starts out around 15.5@100C, making it one of the thicker 5w40s. With that you’re changing additive chemistry again, this time from Infinium to Oronite which might...

A change in brand of oil and additive chemistry will often cause copper to spike from the oil cooler. Cold winter starts and short trips are hard on oil. The viscosity @ 100C is almost a 30 grade. Obviously you didn’t buy the truck to test engine oils, or experiment with extended drain...

A cautionary tale: I parked a company truck at a hotel in Hinton. AB one night a few years ago. Overnight the temperature dropped to minus 42C. The next morning the truck, a 2017 GMC with the 6L gasoline engine started, but there was no oil pressure with fast lube 5w30. After the third time...

High aluminum could be aluminum oxide (rust) from high humidity and/or water vapour in the block. I had this on a UOA from a duramax that was daily driven over a winter with months of cold starts down to minus 40. I blamed it on condensation in the engine as high Al never showed up again.

Up date; My son sent me a photo of the dipstick at 7,000 kms since the 5w40 Delo went in. It’s still above the add line. By now he would have added 5L of 5w20. No wonder oil companies love thin oils, it doubles their sales. What is the P & Zn of Delo 5w40? The coincidence of the alternator...

Cadillac xt6 lease returns at half the price of a new one, or Chevrolet Blazer and 23 & older Acadia with 3 row seats and the 3.6L LGX.

With a sign on the fence post fafo. Keep those Powder River coal trains running. If Alberta becomes the 51st state, I’m moving there.

Rolled out in 2014, Delo SD 15w30 was advertised as a fuel economy option for urban delivery trucks that started and stopped all day long and never reached operating temperature. Featured in monthly trucker’s publications and TV advertisements with class 8 tractors having a tug of war on a...

XW40 trumps XW30.

XW30 trumps XW20.

I thought that the replacement for the 0W20 crap is M1 0W40 FS, not the Dexos R Corvette approved 0W40. As I mentioned before, the furthest I’ve driven with 0W20 is home from the dealership.

Most Diesel synthetic engine oils are 5W40, 0W40, 0W30 or 5W30. CK-4 synthetic 15w40 and 10W30s are starting to become more common. Back in the day Delvac 15W50 was a thing. I have a couple of pails of Duron 10w40, a grade more common in Europe to use up one of these years.

For anyone who believes that, I have a bridge in Crimea for sale.

I poked around Walmart and found Pennzoil Snowmobile Premium Plus, 5L for $59.97. It meets EGD/FD and is likely the old green bottle Shell Ultra Synthetic that’s discontinued. As near as I could tell, the Shell Ultra was the same product whether it had a PWC or snowmobile on the label.

I use the same THF that meets J20C or both C&D in power steering, transfer cases and the hydraulic fluid in JD lawn tractors.

In a democracy you get what you vote for.