@cristi.r: Mulţumesc pentru precizări!
Momentan folosesc Elf Solaris DPF 5W30, intervalul de schimb la ulei motor şi filtre a fost undeva în jur de 15.000 de kilometri, iar maşina mai beneficiază de garanţie încă 1 an!

@ deci n-am gresit ca am pus si eu Redline 0w40 ? Am luat de la dl Ratiu din Alba Iulia

P.S:  am tot citit aici cat si pe celalalt forum despre Logan unde un anumit user tot insista ca Mobil 1 0w40 este PAO ester; ma amuza teribil de fiecare data, Mobil 1  0w40  nu numai ca nu are nici urma de ester in el, nici macar nu este full sintetic, baza lui fiind in totalitate hidrocracata cu ceva aditivi - nu trebuie sa ma credeti pe cuvant, e sufficient sa cititi fisa lui....

Exxon Mobil Vs British Petroleum ... again

Exxon Mobil wins NAD (National Advertising Division) challenge against BP. It’s no surprize anymore. Exxon and BP had their issues in court before like the notoriuous NAD decision Case #3526 (03/01/99) that forever changed ”synthetic” to a marketing term which may consequently be applied to API Gr.III based products.


Well this time Exxon won as the decision was in their favor. In both a television commercial and interactive Facebook advertising, BP subjected its product and ExxonMobil’s Mobil 1 motor oil to a purported competition: cars lubricated by each of the motor oils were placed on dynamometers running at 75 miles per hour, on a seven percent grade, fully loaded at 1,600 pounds, for five straight days – leading to dramatically-depicted engine failure. BP relied on this “torture test” to support claims that its product is “DRIVEN STRONGER,” and was “proven stronger than Mobil 1.”

NAD agreed with ExxonMobil that, although torture testing can be used to support product claims, all advertising must be consumer relevant. Concluding that BP’s torture testing failed to present conditions with “real world relevance,” NAD further criticized several aspects of BP’s test protocol and statistical modeling. Agreeing with ExxonMobil that BP’s protocol was insufficiently reliable to support its numerous comparative claims and denigrating product demonstration, NAD recommended that the advertising be discontinued. BP has appealed the decision to the National Advertising Review Board.

Source: Kramer Levin Naftalis & Frankel LLP) Kramer Levin Wins NAD Challenge for Client ExxonMobil Regarding Castrol EDGE Advertising February 11, 2014

Did you know the higher the viscosity index of the base oil the higher the viscosity in your bearings and cams? Oil blenders typically use viscosity index improver to mimic the behavior of a high VI base oil or to augment an already high virgin VI. However, the VII (viscosity index improver) contribution to bearing viscosity is much less than that of the base fluid(s) and it will also deteriorate in time turning in what's called shear thinning.

In other words, besides the temporary shear drop measured in the HTHS tests you may also experience permanent VII shear like the one measured by the Kurt Orbahn test. Also VI improvers are more sensitive to oxidation than the basestocks in which they are used, which may result in a progressive loss of viscosity index and thickening power with use and frequently in the formation of unwanted deposits.

All applications will benefit from a high (natural) VI but in most cases that's not easily recognizable by the user as most blenders will not publish their HTHS viscosity. Comparing this shear thinning value between two oils with otherwise similar viscosity ratings can provide a rough estimate of the relative VI improver.

Most low VI base oils will not publish this value (as well as Noack evaporation loss) as it will show too much of the formulation. Some PAO and bio-ester base stocks may go beyond a VI of 220 and even 240. You can bet anybody spending that much on these base stocks will make a strong marketing point of it on the label...even it's only 15%. However it seems only the oils having incorporated generous amountswill publish both Noack and HTHS as no compromise is left to cover for.

Sincer eu nu am simtit diferenta intre ele.
Un singur lucru observ: cand il schimb, cu ala nou e mai infundat sunetul.

Tot ce conteaza este norma RN0700 (mai sunt si alte norme ca 710 sua 720 - unele la turbo si la diesel parca) si sa fie o marca consacrata. (norma inseamna ca uleiul respecta standardele productorului - atentie ca e vorba de aditivii din ulei, vascozitati...).
Iti place cum suna Mobil1, Aral, etc -> sa aibe norma si gata.

Doriti sa protejati motorul (extra sa zic asa):
- schimbati uleiul la jumatate din interval/km
- pentru un stil de condus:
      - mai turat (des intre 3500 - 5000rpm) => 5w40
      - normal (cand nu ajungi la fiecare plecare la peste 3000rpm) = 5w30

apropo cristi.r tu ce marca de filtru de ulei folosesti?
eu folosesc doar Knecht Mahle de 8 ani de zile     

SorinXP de cand folosesti motul?
eu dupa 7 ani de folosire motul 300v 5w40 alternat cu 5w30 la schimburi,in functie de cum gaseam sa cumpar in perioada reviziei, mi-a lasat in baia de ulei niste depuneri gelatinoase gri inchis spre negru
cristi.r stie despre ce este vorba, s-a mai discutat si pe alte 2 forumuri

Pentru logan benzina e bun si valvoline 5w30.

Pentru caldurile din sud e mai nimerit 5W-40.