QUOTE(ThunderGod_Cid @ Feb 22 2012, 05:08 PM)
LM the hipster huhu
Added on February 22, 2012, 4:13 pmso if the oil is not cleaning the engine and producing so much soot that the OF cannot handle, why not change the oil TOGETHER with the filter? If it's a group II oil i wouldn't even go past 6,000km. All, or most oils are hydroscopic btw... which is why manufacturers ask to change at 5-10k, or 3-6months, WHICHEVER COMES FIRST
as salam,
that's depend on what type of engine oil you're using....if group I and Group II please change it on time....coz of the additif package cant last longer....also the VI will reduce significantly let say from 128 to 90(example)...
but if one can get Group II+, III,IV then the OCI will be longer than normal......like the AMSOIL....proven up to 15000 miles(miles not KM)
and again...it also depend how much confident customer with the engine oil....even if the manufacturer claim can last up to 20000km(with OF change every 5k km), but the customer is not confident, no one cant argue...
10 basic ADDITIVE package that have to be put in all engine oil are:
1. Detergent
2. Dispersant
3. Oxidation Inhibitors
4. Corrosion Inhibitors
5. Rust Inhibitor
6. Anti-Wear agents - most likely to be put
7.Foam Depressants
8. Viscosity Index (VI) Improvers
9. Pour Point Depressants
10. Friction Modifiers
the FORMULA is secret and what are the additive are also secret...only the manufatrurer know...
but for Anti Wear, most likely are ZINC and Phophorus aka ZDDP
again, depends on what brand of EO you're using...
just my 34.5sen....kindly correct me if i'm wrong...as i also new to this info
sarjantulang