2021 GM 3.6 recommendations
- Thread starter Slick3914
- Start date
What does the owners manual say? The folks here don't provide the warranty, the car manufacturer does.
He's looking for a brand.
Suggest PP, Mobil 1, QS.
Oh, ok. Any full synthetic that meets the manufacturers specifications. Does it require Dexos 2 approval? Not all Mobil 1 has that.
Whatever is on sale and/or has a rebate going on that meets the GM specification.
I would use Pennzoil Platinum myself
I have a 2017 GMC Canyon with the current version of the 3.6. Great engine, good power but also good gas mileage if you don't drive it like you stole it. Mine calls for Dexos 5W-30 but I have had the best luck with Castrol Magnatec. When using Mobil 1 there would be what sounded like the cam phasers rattling before they pumped up with oil pressure that lasted a second or so on a cold start. Since switching to Magnatec I do not hear the start up rattle.
And if someone chimes in and tells you don't buy it because the timing chains will grenade the engine don't pay them any mind. The 3.6 was redesigned about 7 years ago with revised and shorter timing chains plus it has an internal catch can device that traps oil vapors before they can reach the valves thus avoiding the carbon build on the back side of the valves that some DI engines have. I have seen no reports from owners of the current 3.6 about having problems with this engine.
Because it is a DI engine I change the oil about every 5-6,000 miles, usually at about 75-80% on the oil life monitor.
Use good quality full synthetic and change oil more often than the owners manual or oil life monitor suggests.
Any name brand oil from the majors and with the proper ratings will be fine.
Get the d1g2 that's on sale 
M1 0-20AFE or EP. Order online from WM.
That is correct.
GM 3.6 Liter V6 LGX Engine
The 3.6 liter V6 engine (production code LGX) is a naturally-aspirated six-cylinder engine produced by General Motors for use in a broad range of vehicles. It i
gmauthority.com
Great advice.
Besides Magnatec, which I have used and like, may I also recommend D1G2 oils of similar value and performance -- both Quaker State Full Synthetic 5W-30 and Costco's Kirkland Signature 5W-30. Both of these have performed well in Chevy DI 4-cyl Equinox and my Silverado with a Gen III 5.3L.
M1 5W-30 is dexos1 gen2
M1 5W-30 ESP is dexos2
I don't see the Colorado or Canyon on the vehicle list in the article.That is correct.
GM 3.6 Liter V6 LGX Engine
The 3.6 liter V6 engine (production code LGX) is a naturally-aspirated six-cylinder engine produced by General Motors for use in a broad range of vehicles. It i
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