Extended Interval HPL Oils For a 2.3L MPC Bronco?

[Hohn]

Honestly, for all the negative effects on oils that I've read fuel dilution causes outside of viscosity loss I think I'd rather just play it safe and run short drain intervals. It's not that much time and money, and probably better for the engine overall.

Dilution is a problem for reasons other than mere viscosity loss, but some oils can almost shrug off these other effects and make it purely about viscosity.

The HPL I ran in my accord got to 4% dilution in only 4400 miles but the engine is immaculate, wear is vanishingly low, and the oxidation and nitration levels suggested that the oil was basically ignoring the dilution. I'm currently experimenting to see if I can go 10k OCIs on a known diluter with HPL. So far, all indications are that it will make 10k without issue.

Not all dilution is equally a problem-- some oils tolerate it it remarkably well.


The main things you have to worry about (besides viscosity loss) are oxidation and TBN depletion. This is why some non-HPL oils might not make it on longer OCIs in high dilution cycles; those oils lack the TBN and oxidation resistance to go the distance with deposits held in check.

That said, I'd consider some oils like Euro FS 5w-50 to be a good choice for heavy diluters, it's just so hard to find that I'd rather run HPL PCEO for about the same cost. Euro FS 0w-40 is also a great choice but probably not thick enough or shear stable enough to keep KV100 in the face of both heavy dilution AND high miles.

 

[McRightclick]

My Bronco finally showed up last week... and after fully settling on M1 ESP I caved and bought HPL instead I blame you all for the addiction!

 

[doverlabs]

From what I’ve seen - kart geo has me sold on the potency of HPL Euro 5w-40 - I think that’s the flavour he uses but you can’t go wrong with 0w or 5w.

 

[McRightclick]

From what I’ve seen - kart geo has me sold on the potency of HPL Euro 5w-40 - I think that’s the flavour he uses but you can’t go wrong with 0w or 5w.

I asked David at HPL a bunch of questions about my use case (and oils in general) and he kindly gave very thorough answers for all of them. For this engine he recommended 5W-30 Premium PCMO, with 0W-30 being optional for the Idaho climate, and I certainly wasn't going to argue with his suggestions!

 

[doverlabs]

Hard to argue with that! How did you get a hold of the guy? I’m still waiting for feedback on the lead in my oil sample after switching to HPL.

 

[McRightclick]

Hard to argue with that! How did you get a hold of the guy? I’m still waiting for feedback on the lead in my oil sample after switching to HPL.

I originally gave their front desk a call to figure out which oil I was supposed to use, and the nice lady there connected me by email to him for an answer. I'd give them a call

 

[doverlabs]

Will do! After I finish up tuning a 2nd gen FRS.