One of the reasons, yes.
There's nothing wrong with 5W-20. A good percentage of new cars are recommending it's use.
There was something said about the thicker oil could kill the valves. 5-20 is recommended on my year(02). Regardless I let the engine come up to temp before I exceed 2500rpms.(Prochargers instructions)
And I do not do high revs with a cold engine
i use motorcraft 5-20 is that bad???
Will 5-20 work with the 4.6 ....yes. Will it provide enough lubrication for the engine...no. 5-20 is some thin sh1t. Oil pressure will decrease and there will be more rotation friction. Like I said, one of the MAIN reasons Ford did it was to change EPA ratings. 5-20 is just too thin for my liking, especially on older modular engines that burn oil faster. 5-20 is more likely to get past the piston rings compared to 5-30. JMO....
with or wiyhout a power adder, you should never rev an engine over 3grand ever...even the dumbest people know that
They said 5W-30 was thin years back. That's the old and incorrect school of thought. There's plenty of 0W-20 and 0W-30 oil in use today and no one has problems. Engineers are very smart and know what they're doing. They recommend 5W-20, so it's fine to use it. Alot of the 5W-20's and 5W-30's aren't that far apart in specs, so using either is acceptable.
If you'd like a lot of great information from nerdy, techy oil guys, there's a lot of it in the Bob Is The Oil Guy forums. I'd recomend some reading up on this.
On the topic of Synthetic Oil, I run Mobil 1 5W30 and only drive my car 3K a year. So can i get away with only 1 oil change a year with synthetic or does it still go bad and should i change it at least every 6 months?
haha go ahead and run 0 weight...then boost the engine and tell me what happensI was at Autozone the other day and I saw the Mobile 1 0w-20 on the shelf.. I read the back and it said it met all the specs of 5w-20 and could be safely used "for increased economy".
Riley
On the topic of Synthetic Oil, I run Mobil 1 5W30 and only drive my car 3K a year. So can i get away with only 1 oil change a year with synthetic or does it still go bad and should i change it at least every 6 months?
No need for synthetic.
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