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  1. J

    Valvoline $5 rebate on 5 qts 8/1/2026 - 7/31/2027

    Me wondering if it will eventually extend to ATF as it did spring-2025.
  2. J

    LSJr tests and discusses DexosD babymax oils

    We all know you're above average with your comfort level of unsupported assumptions. The truck doesn't have an oil temp sender. On similar trucks that I've owned with oil temp, 230 under similar conditions (actually the same route with similar gross weight) 230 was not a safe guess. I'm well...
  3. J

    External Transmission Cooler in series with the radiator cooler?

    But the whole "puck in the heater core circuit to assist trans warming" is irrelevant to the OP (his is in the radiator cold tank) and was acknowledged explicitly in post #8. So really this is an argument about nothing. Perfect for BITOG. On my current truck, the oil-air trans cooler is in the...
  4. J

    2025 3500 RAM 6.7 Cummins; 10w30 vs 5w40

    FCA didn't back-spec the restriction on 15w-40. The 2019 owners manual said 10w-30 or 5w-40 when the truck was sold, new. It wasn't some scientific process that later led them to exclude 15w-40. The TSB cites deposits. To which I point the finger back at FCA for their silly 15k interval...
  5. J

    LSJr tests and discusses DexosD babymax oils

    It's almost like you had some arbitrary notion of a 20 weight falling apart at high temperature, and then later stipulated some self-defined viscosity/HTHS threshold that isn't met. I don't think any of us would've expected a 20 weight to not be thinner than a 40 at high temperature. I...
  6. J

    External Transmission Cooler in series with the radiator cooler?

    But it is still the cold tank, and engine coolant can't get there without crossing the tubes. If the thermostat is partially open and the vehicle is moving, the cold tank is closer to ambient than than thermostat setpoint...up to the point the radiator is saturated and the thermostat is full...
  7. J

    External Transmission Cooler in series with the radiator cooler?

    My Toyota isnt an external puck for the transmission. (It does have a puck heat exchanger for oil.). Like the OP, it’s in the cold end (bottom) of the radiator.
  8. J

    Volvo VCS-2 (european) the best for modern engines ?

    Cat EC-1 has long been less than cutting edge. Volvo VCS-2 sounds like Peak Final Charge Pro. https://www.owi.com/binaries/content/assets/documents/trade-show-documents/hdaw-2023/peak-hd-afc-brochure.pdf
  9. J

    Life Expectancy - Saving and Planning

    It's almost like when you remove the small numbers the average of the remaining numbers goes up. Law of averages? Survivor bias?
  10. J

    LSJr tests and discusses DexosD babymax oils

    What you call "data" I call marketing claims. We all know useful lube life is 1) subjective and 2) dependent on driving style. Both of these are ignored by your "data," which makes them seem like heavy generalizations, because they are. But if it fits your gas vs diesel worldview, cling to...
  11. J

    External Transmission Cooler in series with the radiator cooler?

    My toyota and truck both have factory, dual coolers. Keep in mind the radiator heat exchanger is in the cold end of the radiator, sitting in water that is generally around or slightly above t-ambient (far below engine coolant temperature) unless the radiator is saturated, at which point the...
  12. J

    2017 6.7 PSD 151k mi; HPL cold climate 5w40 15.5k mi - used oil analysis

    This only means that the rate of oil consumption is roughly equal (within measurement ability) to the rate of fuel dilution. The magnitude of either cannot be known from the dipstick. The amount of oil I've seen in the 6.7 CCV system is non-trivial. Two percent is roughly a cup in a 14 quart...
  13. J

    New Headlights !

    Sigh.
  14. J

    Mobil 1 $10 rebate + Fast and Furious Cup

    Yeah, someday I'll figure out what my time is worth and change my values. Meanwhile, I'm set for 2+ years on all three vehicles with bargain oil ahead of oil-gate 2026.
  15. J

    post your latest transmission lubricant change.

    July 12th: 2009 Toyota Venza U660e Transmission @ 101k miles - 2.5 qts ATF out. 2.5 qts Valvoline FullSyn "Hybrid" ATF in. ($1.45/qt AAP clearance fodder.) Annoying how little fluid comes out of this unit. Only prior service on this unit was 15k ago: spill and fill with Toyota WS. 2014 Ram...
  16. J

    Mobil 1 $10 rebate + Fast and Furious Cup

    Well, my rebate is closed out. 1) Submitted for three jugs. 2) Complained by email per spirit of this thread 3) Was reassured by email that $10 was on the way. 4) Replied that it should be $30. 5) Got reassured that it would be $30. 6) Got tracking email for cup(s). 7) Got $10 GC email on day...
  17. J

    Your new Refrigerator will not last as long as your old, Not a Chance, unless you do this.

    My 2004 GE is going strong. I did use a trash can to fashion a new back cover after the fiberboard one got damaged by an icemaker leak and fell apart when I cleaned the coils the first time, in 2016. I think I've cleaned the dust off the innards twice total. But I hate having the refrigerator...
  18. J

    The Science Behind Million Mile Engines

    An overbuilt 3.0L engine that only makes 120 hp and 180 lb*ft of torque. That's part of the recipe. Keep power levels low enough that they can't hurt themselves. Kinda like ford 7.3 diesels. The rest of the drivetrain then lives an incredibly easy life.
  19. J

    The state of everything seems broken...

    But if he wins, can he counter for his legal fees?
  20. J

    The state of everything seems broken...

    If a business is so busy that they have to develop a "system" to handle me, and that "system" is broken, I'm always happy to alleviate a small part of the business volume that they find so problematic. I can find a new provider. It's always bad policy as a business to blame your systems in...
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