Amazing. It's almost like thicker is better.
GM now saying to use 0w40 in 21-24 6.2L
- Thread starter That John dude
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From the other thread on the topic:
Please note: GM dexos R engine oils meet or exceed the performance of GM dexos 2 and GM dexos 1 Gen 2 and Gen 3 oils and are backward compatible, therefore vehicles equipped with gasoline engines that used GM dexos 2, or GM dexos 1 Gen 2 or Gen 3 may use a GM dexos R licensed engine oil of the appropriate viscosity grade at their next oil change.
Licensed dexos®R brands
| Mobil 1 Supercar | ExxonMobil Oil Corporation | dexos™R | 0W-40 | DR40FADA015 |
| Mobil 1 Supercar | ExxonMobil Oil Corporation | dexos™R | 5W-50 | DR40JADH015 |
| Mobil 1 FS | ExxonMobil Oil Corporation | dexos™R | 0W-40 | DR40FAGD817 |
| MOBIL 1 ESP X4 0W40 | ExxonMobil Oil Corporation | dexos™R | 0W-40 | DR40FBGD817 |
| Mobil 1 | ExxonMobil Oil Corporation | dexos™R | 0W-40 | DR40FCGD817 |
Many of us knew this was a problem of epic proportions. What's interesting is that there is an entire group of people who will proclaim that there are no oil related engine or lubricated component failures happening. When clearly, it is common. From Ford's cam phaser issues, to rapid timing chain wear (that one should be no surprise) and premature bearing wear, cam lobe failures, cam follower failures and more.
As always frequent oil changes, a quality oil and adequate viscosity are required.
As always frequent oil changes, a quality oil and adequate viscosity are required.
Rotella truck oil for the win. The company I used to work for used 15W-40 in their pickups from new until they were worn out with 300+K miles on them. They would be absolutely abused. If you're in a Southern climate, I don't see any reason not to use truck oil and yes I saw the Lake Speed Jr. video
Is there any link confirming this ?
Meh, if you use lightweight oil you cannot contract or transmit lightweight oil problems. It's safe and effective. The experts said so.
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She did, in fact, say that. No link needed.
BrendanC
$100 site donor 2024
i guess 5w-30 is now too thin for them
been running 5w-30 in 5.3/6.2l LT’s for a while. next drum of HPL will be PCEO 5w-40
been running 5w-30 in 5.3/6.2l LT’s for a while. next drum of HPL will be PCEO 5w-40
Oops. So much for CAFE and xw-20 oils protecting as good as thicker oils........... Not so in this application. Time to hide.
Average Joe crooks neck to left while pouring in 5W-30 and says “Wah?”
Later mumbles “never heard of no 0W-40”…
Later mumbles “never heard of no 0W-40”…
Here’s a before an after almost overnight. Bright side there will be more brands eventually making it lowering the price. Super car isn’t the cheapest for the average joe at Walmart.
BrendanC
$100 site donor 2024
am i reading correctly the the M1 FS “Euro” will be Dexos R? great news if so.
Looks like a Euro Formula, ESP and plain M1 Vanilla version. It will be hard to all of the sudden market any of these. I imagine Super Car will slowly fade away. Don’t understand ESP one. Technically Super Car replaced ESP.
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And I thought Toyota was the only one having problems with the engines in their full size trucks.
I don’t know if it’s a boundary lubrication issue but that seems unlikely. Speculation if logic applies viscosity around 11 cSt needed warm rather than 7. But of course temperature much higher than that- for cam phasers or some such.
dnewton3
Staff member
NOTE:
Two threads with same topic have been merged.
Guy - please check before you post duplicate topics.
Two threads with same topic have been merged.
Guy - please check before you post duplicate topics.
4WD
$50 site donor 2025
When M1 0W30 hit the south - it was on clearance in a year and slow to return …
A naturally aspirated DI engine isn't going to have lspi unless in extreme scenarios. It's usually the turbo that exacerbates the possibility of lspi.
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