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Not my truck, but always liked this look. These are OEM rims in a 22", you can get aftermarket rims which look identical but are at 20" instead, which look a little nicer, more sidewall and less rubber band.
More shear stable is a good thing. When an oil shears down it can drop almost as much as a grade or more (so maybe it's now a 0w-16 instead of a 0w-20). Xw-20 is already super thin for a hemi, shearing down is bad news.
Owner's manual also says transmission fluid is "lifetime" and doesn't need to be serviced. They're very clearly wrong as ZF says to service it.
5w-30 offers superior protection, it's not a "oil cap" thing it's a tribology thing.
What makes a 5w-30 a 5w-30 and not a 5w-20? It's the measured HT/HS value at 100 degrees celsius. When the oil is colder, say, at 0C, it will be much thicker, maybe a 5w-40. When it's at 150C it's thinner, maybe a 5w-20 at that point.
Shorter answer: yes you can safely run different grades of...
No. This is what guys who don't understand math like to think, but it is wrong. This isn't marriage where there are feelings and attractions and character flaws.
Example. You have Bob with 2 bottles of 500ml of water, and you have Fred with 1 bottle of 2l of water. You don't need to drink all...
The math is the only thing that doesn't lie, or get confused, or have a poor memory etc. The math says the 3.21 is a better truck in every way, so it is.
There is nothing to test, it's a math formula. The v8 tundra with the 6 speed has a first gear ratio of only 3.333 whereas the new Rams have a first gear ratio of 5.
Ram: 5 * 3.21 = 16.05
Tundra: 3.333 * 4.30 = 14.3319
Clearly the Ram digs harder from a stop.
There is literally nothing about...
Indeed, thanks for the laughs; because the 3.21 has a shorter first gear with the ZF than the Tundra with a 4.30, and it has 2 more gears on top of it all. The factual points are, the 3.21 destroys the tundra on 3 key points:
1) shorter first gear (better for off the line pulling)
2) taller...
Be aware that guys have damaged their frames using suspension helpers. I know that most get away with it no problem, but some have had issues.
All I'd recommend is to use a proper WDH. Sag under load is perfectly fine and should be expected, the truck is designed to work this way, as long as...
If you have a samsung phone: open the image on your phone, tap and hold on the bottom of the phone to popup the google search, draw with your finger around the part, google AI searches and responds with this:
"The component shown is likely a vacuum pump for a power brake booster".
While I might not agree 100%, I think you nailed it pretty well. Guys who lease/trade trucks in every few years, guys who think fast is more important than reliability/cost, they're going to favour the hurricane.
Just saw a video the other day where a chrysler tech talks about the hurricane...
The 5w-20 is more shear stable. It will use less VII's, or in some cases, none at all. Which means at high temps it is more resistant to shearing down.
This point I don't agree with 100%. Idling is a waste of gas and is needless wear on the engine, but the "not enough oil pressure to lubricate engine" is incorrect. It has > 20 psi and that is way more than enough.
There are guys pushing close to 2000 or more idle hours and have zero issues...
0w-20 and 5w-20 are for fuel efficiency. It doesn't help in our trucks that we individually would notice, but even a fraction of a percent helps them when it comes to adding it up for their corporate/CAFE mpg.
I would suggest to ignore the manual for oil change interval as well. 5000 to 7000...
HT/HS is the important number, this value is insufficient for 20 grades in a hot hemi. When this happens, the oil is no longer able to provide the film/separation between the components in the engine and the engine relies on the anti wear additives of the oil.
The 30 grade recommendation is not...
UOA's just show wear numbers. The science of tribology says higher viscosity oil = higher HT/HS which is what separates the mechanical parts from eachother, reducing wear.
You haven't compared wear in your engine vs 30 grade? I've seen great reports/trends on UOA's right until they started...
My coolant temps don't ever exceed 195F unless I'm towing in the summer. During winter months, I hover at 185 for weeks on end, city, highway, stop and go, doesn't matter. Perhaps sitting still at a drive through for 5+ minutes would do it? Haven't paid that much attention to it recently to be...
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