BannedCR500Riders.com

So my new truck say's it should get 5w-20 oil. My very limited understanding is this is just to make fleet vehcles get slightly better milage, but I wonder if that is at a cost to how long the motor will last. Would I be better with 5W-30? Also in the aimsoil line are the additives the same in those two oil weights?

most of the newer fords require the 5w20. all of the modular motors and the small v-6's this is because of the lifters they use. The thinner oil is better in and case because it can get it tighter areas. I put 5w30 in my wife's old ford fuckass (focus) and the lifters clattered like crazy. use the recommended weight, they recommend it for a reason. I use moble1 in 5w20 for everything in my stable except the old diesel, it gets the delo stuff.

My truck makes a horrible noise on anything other than 5w20

it doesn't have anything to do with fleed vehicles, all of the modular v-8s take that same weight, only the old design motors take a different weight (4.0 v6 takes 5w30, but that is still based on the 2.8 v6, just with added OHC)

britincali wrote:My truck makes a horrible noise on anything other than 5w20

yup, the modular v-8s HATE the thick stuff, thats a good way to mess up a motor.

Well something is up with Fords cause Amsoil is not giving a recommendations. Same with Diesels that I was looking at earier today. I think that it has to do with not enough testing? Would like me to call tech service and see what they have to say?

They do list 5W-20 but thats there 7,500 mile change interval.
http://www.amsoil.com/storefront/xlm.aspx

However, being that your in a colder climbet I would go with there 0W-20.
http://www.amsoil.com/StoreFront/asm.aspx PLus you'll get the full 25,000 miles drain interval.

Applications
AMSOIL Synthetic 0W-20 Motor Oil is recommended for Honda, Acura, DaimlerChrysler, Toyota, Ford and all other applications where SAE 0W-20 or 5W-20 is required with the following specifications:

API SM/CF, SL, SJ. . .
ILSAC GF-4, 3. . .
ACEA A1/B1
Ford WSS-M2C930-A
DaimlerChrysler MS-6395N

Please use customer # 350882 when ordering. But hell, its probably sitting on self somewhere up there.

iggys-amsoil wrote:Well something is up with Fords cause Amsoil is not giving a recommendations. .

I changed my oil at the store one day and they put mopar 5w30 in, it made a horrible top end noise for 3 days before I found out what they did

Thanks, will do the number