Ok, I think I've mentioned how I am uncomfortable with the recommended oil for my new truck. I checked with the dealer to find out that surprisingly the head is teflon coated and that anything thicker would gunk up and destroy the heads of the v-6 motors.

Even further is that I am a die-hard Mobil 1 user. But it seems that Ford is actually not trying to get you to use Motorcraft just because they make money off it. So thus, Motorcraft it is. Im sure if I wired a pyro gauge it would probably be fine.

 

That sucks, I bought my truck new in 02' and as soon as I got it home I drained the oil and put in Mobile1 5w-30. I have been running that oil in my truck for 99,678 miles so far with no issues. Even when I take it in to the dealership for big maintenances I supply them with the Mobile1. Surprisingly they have always been cool with that. The only thing they ever reemed me about was when I supplied them with the Fram oil filter. The tech refused to put that on . I was angry at first but glad he convinced me to stick with the MotorCraft oil filter.

 

I'm currently using Mobil 1 EP 5W20 and a Mobil 1 filter. No problems.

 

ORLY?^

Ill have to look into that. I wasn't so sure if Mobil1 did something that thin.


Oh, I forgot to mention that anything thick like 10w something or more will set off a CEL

 

Is this something new with the 07 model 4.2?

 

Mobil 1 has several 5W20's now - the EP is top of the line. Wallymart has it for $6.46 a quart. The regular synthetic Mobil 1 is $5.98 a quart there. They also carry the filters.

Chris, what you are doing is probably fine. Truthfully, the 07 would probably not have a problem with 5W30, but Ford recommends 5W20 for several reasons, I just feel more comfortable using the recommended grade.

 

Cool. I've ran the 5W-30 in both my 97 4.2 and my current 02 4.2. I was surprised to see where he said the CEL will come on in his 07. I may be in the market for a new truck eventually and venture to say I will probably get another 4.2.... 3rd times a charm I guess.

 

Hi.

No teflon - they're blowin smoke

Let's assume that it's true for a moment - that makes their case a non-sequitur, since teflon renders a surface even less likely to have another substance adhere to it .... think about it... but not too deeply, because there IS no teflon

Use the recommended lube, like the other good folks in this thread suggest.

Mobil1 EP is highly regarded, if a little pricey.


****

 

I've been using Castrol GTX High-mileage 5w30 for years on my old 91 Sierra and my 97 F150 with the 4.2 and I havent noticed any issues. Curious though, why did they get mad at you for the Fram filter? I've had both Fram and Motocraft on my 97 and I see no difference?

 

I suppose the drain-back valve qualities or something..

 

I think it was jut one overly proud Ford\MotorCraft mechanic. I always supplied my own Mobile1 oil and I've used Fram filters for years on all my cars and trucks. The guy just left the Fram filter in the box and charged me for the motor craft filter which he installed. I was kinda PO at first but the guy was cool and explained to me how Fram filters were so bad. There is actually some posts in the engines forum which back up the theory that Fram filters are not all that good. I have never had any issues with them but I'll admit I have switched to the motorcraft oil filters now. Keep in mind that the only time the dealership changes my oil for me is when I have it in for one of the larger services like the 60K mile service. Other then that, my truck has seen many Fram filters in it's 100K miles since I change my own oil every 5K miles.

 

Do a search on the subject of oil filters and you will find the reason over and over why Fram is a no-no.

 

I have yet to see the inside of a head with that black tephlon coating, and I dought they did it on the 4.2.

 

Today's oil requirements and technology are driven just as much by emissions and fuel economy requirements as by actual lubrication quality.

My manual says that to protect my warranty, use Motorcraft 5W20 or equivalent 5W20 that meets Ford spec WSS-M2C153-H. The 5W20 recommendation is to cover their butts for emissions and fuel economy. Would I use a different weight? Maybe - but I would not use anything that's any heavier than 5W at the bottom end or any lighter than 20 at the top end. Would I use straight dino? Nope. Semi-synthetic or full synthetic only.