Thickest High Mileage oil

[doolah02]

Does anyone know which 10w30 high mileage oil would be the thickest?
Would it be Maxlife or Casrol or maybe some other?

 

[Ramblejam]

Conventional, or synthetic?

 

[901Memphis]

Maxlife 10w40 would be thicker

 

[THafeez]

Mobil 1 15W50? I know it isn't high mileage, but wouldn't it be the thickest on the market?

 

[Farmer]

Mobil 1 High Mileage 10w30, has a HTHS of 3.5 and a CST of 12.1 @ 100C also it's ACEA A3/B3.

 

[doolah02]

Conventional

 

[SirTanon]

The first thing that I want to know is - Why do you need "the thickest" HM 10w30 oil? What is it about your engine that you feel requires it?

Next is - if you're concerned about having a thick HM 10w30, why not just go with a 10W-40?

 

[sicko]

You're splitting hairs if you're looking for the thickest High Mileage oil in the same weight. If you want thicker, why not just go up a level to a High Mileage 10w-40?

Either way, between MaxLife and Castrol High Mileage, I prefer MaxLife beacuase it ran so smooth in my vehicle when I used it.

 

[FCD]

Just go up to Maxlife 10W-40 instead of looking for a very thick 10w30.

 

[doolah02]

Would Maxlife 10-40 be a little too thick for a 4.0 SOHC, I have 113000 mile on the engine.

 

[Ramblejam]

It'd be just fine for it. Trying to address an issue?

 

[doolah02]

Trying to keep timing tensoners a bit quiet at start up. I replaced them but still getting a little rattle only at start up.
Mostly when it sits for a couple of days.

 

[Ramblejam]

What oil filter are you using?

 

[doolah02]

Fram Ultra which helps a lot too

 

[ndfergy]

I agree with the chaps above: if your looking for the thickest High Mileage oil you may as well go the higher HTHS in a 10w40. GF-5 oils would be hard pressed to go above 3.2

Castrol GTX 10W40





GF-5

 

[CT8]

That is because the oil drains out .

 

[Ramblejam]

Originally Posted By: doolah02
Fram Ultra which helps a lot too

Have you tried the OEM Motorcraft?

 

[doolah02]

Yes but the I had less noise with the Ultra, which is an awesome filter.

 

[doolah02]

I was thinking Castrol 10-30 at one point.

 

[Olas]

This might sound like an odd suggestion but hear me out;

Esters help condition seals,
And,
Redline usually have a film strength equivalent to one grade higher viscosity, so,

Redline 5/10w30