HTHS on wiki.seloc.org

[Brit33]

Is this really true?
Castrol 10w60 : 3.7??

hths levels

Castrol RS 10w-60 HTHS 3.7

Castrol RS 0w-40 HTHS 3.7

Silkolene PRO S 5w-40 HTHS 4.07

Motul 300V 10w-40 HTHS 4.19

Motul 300V 5w-40 HTHS 4.51

Redline 5w40 HTHS 4.6

Redline 10W40 HTHS 4.7

Mobil 1 15w-50 HTHS 5.11

Silkolene PRO S 10w-50 HTHS 5.11

Silkolene PRO R 15w-50 HTHS 5.23

Motul 300V 15w-50 HTHS 5.33

 

[oggb]

Has to be a typo. An HTHS of 5.7 for a 60-weight oil sounds about right.

 

[CATERHAM]

Castrol tends to publish the minimum HTHSV for the class as opposed to the actual spec' for their oils. That said, Castrol TWS 10W-60 has a HTHSV of 5.3cP consiquently I don't think their RS 10W-60 will be much different.

 

[Brit33]

Originally Posted By: CATERHAM


Castrol tends to publish the minimum HTHSV for the class as opposed to the actual spec' for their oils. That said, Castrol TWS 10W-60 has a HTHSV of 5.3cP consiquently I don't think their RS 10W-60 will be much different.


Thanks Caterham. Thought it must have been a typo.

What I recently saw was a UOA of 300v 5w40 and it had a very high zddp level perfect for my tappets.

Considering going back to 300v if the 15w50 has the same level of zinc.
General consensus its a better oil anyway, double ester.