Just wondering.

 

Yargh! I put "specialty synthetic" twice. The second time it should say, "specialty conventional"

 

castrol 10w30 + lucas oil stabilizer + seafoam transtune + seafoam in the tank my 5.2 magnum runs like new,with 129,000mi.

 

Mobile 1 10w-40 high mileage 497k 318 still kicking lol

 

I use conventional no additives ever. Have an 88 ford with a 7.3 at 429,000 I looked inside for the first time because a valve keeper came out. Crank went back in without grinding whole thing was in nice shape.
What I'm trying to say is if a ford will run that long on Shell Rottella why waste money on sythetic. And additives are for oilburners and leakers never put them in a good motor.

 

Oh I'm not gonna lie my truck leaks like a ***** lol still runs good though bad tranny leak :/

 

Dodgeman I had great luck with tranny stop leak in a 69 D200 with the 727. Had to add a quart at every fillup put in a quart of Pennsoil ATF with stop leak and never added again !
Oh sorry bout the ford but in 1988 when I needed a one ton crew cab that was far and away the best new truck you could buy with a diesle. Dodge did have the Cummins but no crew cab. And chevy had the 6.2.
Anyone want to buy an 88 F350 with 500,000 miles rust and no wheels and tires?

 

I stick in a tube of red high temp grease and a gallon of diesel fuel= good to go lol

 

Castrol GTX 20W50 in the D150 and 10W30 in the 4.7 Durango.

 

Castrol High Mileage 10W40 with a Purolator Pure One oil filter.