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Daca ati aloca 20 de secunde tabelului de mai sus...nu se rezuma totul la pour point.
PS - ala 5W30 o sa protejeze / ar proteja foarte bine si vara nu doar iarna.
PS2 - intre un 5W20 si un 15W60 la temperaturi foarte mari (ale lubrifiantului), pe care masinile hardcore le ating pe circuit diferenta de vascozitate deja e neglijabila. Asta ca o picanterie, sa va paruiti iar
Cold cranking viscosity simulates the viscosity of an oil in crankshaft bearings during start up on a cold winter morning. The test determines if an engine can be cranked over fast enough to start under extreme cold ambient conditions. ASTM Method D 5293 simulates an oil's cranking resistance when cold, and thus indicates the lowest temperature at which an engine is likely to start.
Cold pumpability measures the resistance of an oil to pumping through the engine after a cold start. The most widely used test is ASTM D 4684. If an oil's viscosity becomes too high, pumping will be hindered with possible cavitation issues. Viscosity here becomes an important factor in determining whether the engine runs with sufficient lubrication after starting in severe cold conditions. The Cold Pumpability test is always conducted at 5°C colder than the Cold Cranking test to ensure the pump can deliver the oil to the bearings.
Pai are multa treaba. Tu "te certai" cu alessandro despre cat de 0W este Eneos ala si vorbeati de punctul de curgere. Eu ti-am pus un tabel sa vezi care sunt limitele in functie de 0W/5W etc si am spus ca nu totul se rezuma la pour point. Apoi era intrebarea ce inseamna cranking ala si am lamurit si treaba aia. Ce nu e clar ?
Eu cred ca baietii rusi au blat cu baietii de la Castrol ca sa dea bine la testele astea facute la temperaturi extreme. Mai sus ENEOS a iesit cam Varza. Daca ma chinui pe netul asta o sa gasesc si alte teste cu Eneos si tare ma indoiesc ca or sa fie la fel.
@ ivan pai si ? baga Castrol in continuare. e simplu !
@ vitriol dan viteza aka xometru alias fanoil, nu termina niciodata. e acolo in umbra cu clonele pregatite.
mai naspa e ca a inceput ivan marian cu Castor, pardon Castron....castrol asa cum ii zice
Eneos nu este miezul...dar daca imi aratati voi un ulei full sintetic cu un raport calitate / pret mai bun eu imi fac cocktail cu el. repet full sintetic adica excludem din start Magnatec 5w40
ideea e sa folosim foarte bun la pret cat mai mic. daca nu tin cont la bani ma duc si dau 200 lei / litru de Elf HTX si am rezolvat problema
Last edited by alessandro; 28 September 2012, 01:10.
Gata ,,ma retraga invins ENEOS Ps...la iarna cand or fi -20 de grade afara ar trebui sa ne strangem la Poli cu cate 100 de grame de ulei din fiecare marca in sticle de 2 litri ca sa facem si noi testele alea ca la rusi si sa stabilim un clasament.
Pana atunci va doresc sa mergeti cum puteti cu uleiurile voastre in motor hai.. Noapte buna !!!
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