Driven GP-1 HTHS

[skippermatt]

does any one happen to know the HTHS of driven gp-1 20w-50?

 

[Adambomb7777]

Email them. They are usually quick to respond

 

[TomYoung]

Air cooled Porsche?

 

[SR5]

Email them. They are usually quick to respond

Then let us know.

My guess is around 5 cP.

 

[Jetronic]

Then let us know.

My guess is around 5 cP.

yes there's a clue (accidentally I'm sure) in the viscosity grades. xW-20 in the 2.x range, xW-30 in the 3.x range, xW-40 around 4, etc.... there's always outliers, and I'm certain people will post them....

 

[skippermatt]

I sent an email to driven asking about the HTHS values of both the 15w40 and 20w50, the reply I got stated that the values for BOTH of those oils is 3.7. I double checked with them that 3.7 was correct for the 20w50, and they said thats what the hths value of the 20w50 is. seems slightly odd that it is that low, but mobil 0w50 racing is 3.9, so

 

[SR5]

I sent an email to driven asking about the HTHS values of both the 15w40 and 20w50, the reply I got stated that the values for BOTH of those oils is 3.7. I double checked with them that 3.7 was correct for the 20w50, and they said thats what the hths value of the 20w50 is. seems slightly odd that it is that low, but mobil 0w50 racing is 3.9, so

That seems very low.

Over here, I can get Castrol GTX 15W40 with a HTHS of 4.0 cP. That was the previous brew (API SN & ACEA A3/B3). The new version is API SP and they no longer give the HTHS.

 

[SR5]

Thinking more, they didn’t give you the actual HTHS of Driven GP-1 20W50 oil. Rather they gave you the SAE J300 viscosity requirement that it must reach.

Under J300 a HTHS of 3.7 cP or above, is required for 15W40 or thicker. This includes 20W50.

Driven just told you that their GP-1 20W50 is “legal” under J300 rules. They didn’t give you its true measured value. Lots of manufacturers do this. It makes their spec sheets less than useful.

BTW why don’t you just use M1 15W50? It has 1320 ppm zinc, and has a HTHS of 4.5 cP. It meets API SN and ACEA A3/B3. It’s a high quality synthetic, running a bit of an old-school high SAPS additive package (hence SN). No need to look past M1 15W50. It’s a great performance oil.