CKNSLS wrote:PatrickA51 wrote:
I use Motorcraft 5w/20w Semi-Synthetic in my 2005 E-450 6.8L Fleetwood.34,000 miles. I use Motorcraft 10w/30w Semi Synthetic in 1995 F-250 7.5L 198,000 miles (leaks more than it burns) I have never used anything different. I even use the 5w/20w in the Onan Microlight Generator. Let the flaming begin.
The Motorcraft oil is a very good oil according to the guys over at bobistheoilguy.com.
PatrickA51 wrote:
I use Motorcraft 5w/20w Semi-Synthetic in my 2005 E-450 6.8L Fleetwood.34,000 miles. I use Motorcraft 10w/30w Semi Synthetic in 1995 F-250 7.2L 198,000 miles (leaks more than it burns) I have never used anything different. I even use the 5w/20w in the Onan Microlight Generator. Let the flaming begin.
down home wrote:
Oil is always a popular topic.
After reading here went looking on the net to find the highest spec synthetic oil.
It is near impossible, or hard, to get past Mobil one and others confusing the issue with some hinting that Mobil One etc has some ester based oil in it. It's all baloney and misleading.
Nissan and others now require Ester based engine oils.
They are hard to find.
Here's my experience. I had a 79 Mustang Turbo. terrible performance stock but the all design was suitable for a raace car such as the brake drums drive shaft and original engine design before bean counter got hold of it. It had an adjustable waste gate, ported polished and o ringed head, unrestricted exhaust different head bolts etc after I finished with it. It would break the tires loose going into fourth gear. 454s etc were left in the dust. Ir ran ester based synthetic, I bought from and Exon Dealer but not branded Exxon. When I couldn't get it I though I was being smart and used a synthetic blend with Ester oil as the base. The dyno oil component broke down under the high eat of the turbo and formed what looked like carmelized sugar grains that ground the turbo shaft to junk.
Mercedes changes the oil in my AMG and uses Mobil One. I'm going to ask for real Ester based Synthetic oil, even though it may ccost 22.00 a quart, next time. I've been putting this off but time to see if I can find it. Dino oil is junk in comparison. Ester synthetic has a much thicker oil film at higher temperatures and will not break down until way past what destroys dino oi.
Tachdriver wrote:
Found this interesting spec on oil specifications...
Clicky
It is important that you maintain the specification as your manufacturer recommends but I do have one question as I too have contemplated changing to synthetic...
Will changing to synthetic make my engine last longer, and or will I get better performance? :h
DougE wrote:
The Walmart culture is to beat their suppliers down to as low a cost as possible. My sole opinion is that this could very likely result in a corresponding reduction in quality. I can see what's in a can of string beans, but not in their gas or oil. This may be why some auto manufacturers are starting to list recommended gasoline brands in their owner's manuals. I had a cheap, skeptical, friend complain about the way his wife's Saturn was running. He filled up with some branded gas. Problem solved. I've got the popcorn in the microwave!
