HTHS min.

[Taylor]

Could someone tell the HTHS minimums for each viscosity, and some oils that meet theminumum of the next highest grade. For ex I believe Fuchs Titan 0w20 meets the 30w min. Thanks in advance.

 

[JAG]

That's governed by the SAE J300 chart. Here's one but I'm not sure if it is the latest: http://www.widman.biz/Seleccion/Viscosidad/SAE_J300/SAE_J300_English/sae_j300_english.html

I'm not sure which oils meet min. of next highest grade. Red Line oils might.

 

[Taylor]

Thanx

 

[Taylor]

20w-------------2.6
30w-10w40----2.9
15w40-60w----3.7

 

[Taylor]

As far as Redline goes their 0w40 (4.0), 5w20 (3.3), and 5w30 (3.8) are all above the next highest grades minimums.

 

[Taylor]

And the 10w30 (3.8), and 10w40 (4.7)

 

[BuickGN]

Redline 10w-30 is about the only thing I would consider in place of my Amsoil ACD straight 30wt. Only thing is the ACD has slightly better cold flow but a 3.5 HTHS and a sligtly lower hot viscosity.

Not sure if it's worth changing for a .3 HTHS difference and slightly worse cold flow.

 

[Taylor]

Why not the 5w30?

 

[Taylor]

Same HTHS as the 10w30 (3.8) It's 0.1 cst thicker hot, 4.3 cst thinner cold, 9*C colder pour point, 22*C hotter flash point, and NOACK is 0.7 less. And can be had for less than the amsoil.

 

[Taylor]

Originally Posted By: Taylor
Same HTHS as the 10w30 (3.8) It's 0.1 cst thicker hot, 4.3 cst thinner cold, 9*C colder pour point, 22*C hotter flash point, and NOACK is 0.7 less. And can be had for less than the amsoil.


This comparison is made with the amsoil acd, not the rl 10w30.