Originally Posted by JFAllen
30wt oils tend to fall into 2 distinct classes. B5) and >3.5HTHS (DEXOS2, A3/B4, C3/C2, VW 502/504/507.) In specifying a 10W30 back in the late 90's they were looking for oils (most likely) on the the thicker end of the 30wt scale.
As it's a non turbocharged, honda engine with roller cam followers, as long as the oil is clean, it'll run just fine
While the
Castol 10W30 FST falls on the 'thin' end of 30wt oils, you'll have no issues. Please don't waste your money on MOSâ‚‚ additives. All modern oils are designed with a balanced additive package, there is no benefit to such additives, other than turning your oil black instantly.
If you intend to beat on the car at the circuit, stepping up to a 40wt oil (0W40 Edge or
DX-5W40 Magnatec if you're a Castrol fan) may be advisable. Simply as a result of the age of the engine, and wanting a slightly thicker oil to fill in the increased bearing clearances at sustained high RPM and high temperature operation.
Jordan
Thanks Jordan,
A well rounded response! I'm definitely not brand loyal. Have heard that Shell Helix 5w40 could be a good option for the s2000, as well as the penrite 5w40 so I may try one of those once I run out of my edge bottles.
Will cut the moly out also, perhaps I'll throw it my 1996 Magna (Diamante in the US I think!)