Thinking
Senior Member
Joined: Jul 2015
Posts: 3,627
Likes: 795
From: Michigan
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,630
From: MI
No problem. It melts down to the real simple, - yea, you can follow the good book with this one Buck.
5000 miles is max. Blackstone labs has it breaking down from that point. I swapped it out right around 3500 miles for 350,000 miles. That engine is still doing it.
5000 miles is max. Blackstone labs has it breaking down from that point. I swapped it out right around 3500 miles for 350,000 miles. That engine is still doing it.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,630
From: MI
Senior Member
Joined: Dec 2015
Posts: 23,191
Likes: 8,619
From: Utah
Full Synthetic is best with a new engine/vehicle from the start. Or an engine that you confirm isn't really that dirty
You don't want to use it, or switch to it rather - with high miles, abused or an engine in question. That's due to the additional cleaning action you get with full syn. You take a chance with partially plugging the pickup screen in that situation or worse.
Sticking to the Syn-Blend just works. Also make sure you use a good filter (FL820S). That's really all you need to do with these engines. You can use Motorcraft, Castrol etc afa name brand. I stick with Motorcraft on the filters tho.
You don't want to use it, or switch to it rather - with high miles, abused or an engine in question. That's due to the additional cleaning action you get with full syn. You take a chance with partially plugging the pickup screen in that situation or worse.
Sticking to the Syn-Blend just works. Also make sure you use a good filter (FL820S). That's really all you need to do with these engines. You can use Motorcraft, Castrol etc afa name brand. I stick with Motorcraft on the filters tho.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,630
From: MI
Quite honestly, the Walmart Supertech oil and the Amazon Basics is really, really good oil. I've switched it up on my 4 cylinders to using the ST, and it performs really well. I am on about 23,000 miles of Supertech only in the Toyota, and it actually gets another 1 or 2 mpg over the Valvoline I was using. And I am a big Valvoline fan.
Strictly Amsoil in the trans, that's stuff is pure magic with these transmissions, really blew my mind....trans fluid specific. It's more priceless than pricey... long term.
Haven't heard a lot about or used Supertech. I haven't been to a Walmart in a coons age lol.