20 replies to this topic

[88pimpin]

I just changed my oil with Quaker State SUV/4x4 oil ($11 for 5-quart jug) and a Motorcraft oil filter($2.77). I thought the oil looked a little low, so I added another quart. The pressure guage is only at about 1/4 past low. I thought it was about half-way before.

So what does everyone else use in their trucks?

[4xfan78]

It all depends on what weight oil you used. For an engine that has some miles on it and depending on the climate where you live I would use the thickest oil possible. For me It does'nt matter what the price is I will always use castrol gtx 20-50, no amout of money could get me to change.

[88pimpin]

Low oil pressure though may be a sign of worn bearings in the bottom end...does it drop when the oil temp rises? Or is it always low?

I don't know. I just changed the oil last night for the first time since I bought the truck a couple weeks ago.

[freak]

I run Kendall in the Bronco and Castrol in everything else.

[Justshootme84]

I use the QS 4X4 in my Z-71, but plain Castrol HeavyDuty 30W in the Bronco. Mobil One is the best synthetic for newer engines, but i would not use it in an older truck or high-mileage motor. It will give you a lower pressure reading and make any leaks easier to find! DOn't forget to check your oil level EVERY day you run the truck or Bronco. You would be suprised how many folks never look, and then burn up the engine due to lack of oil.

[drcarter0734]

I just started using Royal Purple. I have always Valvoline in the past. I also have always used Motorcraft Oil Filters, that was a recommendation from a Ford mechanic friend.

[Wliebhard]

Now for my 2 cents... I've done a LOT of research into oil filters, and found that the ordinary Napa Gold oil filter is the best for the $$. If you have the dough, a synthetic media filter is a step up. Both are 99% efficent in filtering particles up to 10 microns, and goes down slightly (95-96%) when the particles get to 4 microns. The synthetic flows better and is more robust. For comparison, a human hair is approximately 67 microns. As for oil, I have a diesel, so I use Rotella synthetic or Delvo Synthetic with Pro-Long. I change my oil and filter every 8-10k miles.

[Shadow_D]

I stand by Mobil 1 Full Synthetic. I am also trying the new K&N Oil Filter.
I also have a new motor so the leaks are not an issue.

[Justshootme84]

That's cool, WL, I have used the NAPA Gold series oil filters for years on all of my trucks. My only gripe is that it's a bear to change on my 84, and I always made a mess on the cross member. Have to turn the filter upside-down to get it out. I now take the filter off, put it in a Ziplock bag, and then pull it thru the "maze". I learned that trick in Truckin' magazine!!!

[94_bronc]

plain old havoline when it free who am i to bitch

[kelly]

valvoline 30w, napa gold. tried the valvoline max life and was happy with it but i switched because it gets black fast. the 30w stays clear almost to the next change. every 3000. both of my trucks use a quart about every 1500 to 2000 miles and the oil pressure never changes.

[kelly]

i've had lower milage engines that never turned the oil black. it' been my understanding that black oil means that the piston rings are allowing blowby and the oil is getting burned. thats why it's recommended that as the miles pile on you use heavier oil. although synthetics are probaly different. i haven't tried them yet. of course every engine is different and you use what works.

[stinger]

Valvoline 20-50 Racing

[dicain]

valvoline oils is the only oil that i use. and you wont catch me dead with a cheep fram filter or any made by them. take one apart and you'll see what i mean!