Should we switch to 5w-30 Oil?

Extended CV Axles - Lets talk about them

TrailJustin · 2026-04-07T15:55:22+00:00

I have done a deep drive into the Extended CV Axles needed when doing a lift on the 3rd Gen tundra. Here is what I found. What are they? There are two sets of front CV axles that come stock on the 3rd Gen Tundra. The TRD Offroad packages and the TRD Pro Tundra come with a red set that are over all longer and stonger built for offroad. These upgraded Axles handle more weight and flex than the standard OEM Axles. What is the Difference? SpecStandard CVTRD / Extended CV Length~24.5–25.5"~25.5–26.5" Shaft Diameter~26–28 mm~30–32 mm Joint SizeSmallerLarger Plunge Travel~1.5–2.0"~2.5–3.0" When do you actually need them? This is on a case by case bases but most trucks do not need these extended axles. When using the standard size axles you may get a clicking or CV binding noise when at full flex. Full flex happens most often when you are offroad and you may have one wheel completely off the ground and the other side completely stuffed into the fender. At this point is where you will see the limitation of the CV axle. But 95% of the Tundra on the road today will not see the limitation as also the UCA becomes a binding point before the CV axle does. Other Options Now other than the OEM red TRD axles there are others on the market that are also extended that may fit your needs. Ready Lift https://www.readylift.com/high-performance-cv-axle-kit-for-2022-toyota-tundra.html?srsltid=AfmBOoqdrXPGOFgdisL2SmOCSXUiVTyPXraPwaoDCl-K5TunYywnz7oO Rouge Offroad https://rogue-offroad.com/TRD-CV-AXLE-22-TUNDRA-_p_24139.html

TrailJustin

Member

Jan 3, 2026

Could this be causing the problems with the new motor? This information was posted by a guy on the Facebook pages who was doing some testing with a ScanGauge plugged into the truck while driving.

You can clearly see the issue: at idle, the oil pressure is around 4 PSI. That seems crazy low.

On these new motors, Toyota uses a variable-speed oil pump. This is done to squeeze a little more efficiency out of the engine by reducing drag at idle. The idea is that lower pump load equals better efficiency. However, people are saying that when oil pressure drops that low, the oil may not be sticking to the bearings as well. The theory is that running a thicker oil could help the oil maintain better film strength, so when pressure is that low, metal-on-metal contact doesn’t happen.

Honestly, if this really was a problem and the solution was that simple, you would think Toyota would just come out and say it.

Should we switch to 5w-30 Oil?

TrailJustin

Member

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