Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Lubricants was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 19 days and the median time to publication was 49 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Aamir, Muhammad | Maláková, Silvia |
| Akram, Safia | Mao, Zhiwei |
| Antoszewski, Bogdan | Marian, Max |
| Arias-Pardilla, Joaquín | Marko, Matthew |
| Atkins, Penny | Marques, Filipe |
| Barylski, Adrian | Martin, Jean |
| Bechev, Dani | Martinie, Laëtitia |
| Bertsche, Bernd | Maruschak, Pavlo |
| Bewsher, Stephen R. | Masroor, Sheerin |
| Biernat, Krzysztof | Mohamed, Ali Kamal Ahmed |
| Bilgiç, Semra | Molea, Andreia |
| Björling, Marcus | Molter, Jürgen |
| Bravo-Sanchez, M.G. | Moreno, Karla J. |
| Brunetière, Noël | Morgan, Neal M. |
| Bulgakova, Guzel T. | Mouzakis, Dionysios E. |
| Burghardt, Gero | Mu, Liwen |
| Camelia, Gabor | Naderan, Hamid |
| Cann, Philippa | Nevshupa, Roman A |
| Caron, Arnaud | Olaru, Dumitru |
| Changenet, Christophe | Oldknow, Kevin |
| Chasalevris, Athanasios | Ono, Kyosuke |
| Chen, Dyi-Cheng | Osuch-Słomka, Edyta |
| Chiñas-Castillo, Fernando | Owen, Joshua |
| Cicone, Traian | Paglia, Laura |
| Conte, Marcello | Pal, Snehashis |
| Costa, Henara | Pamies, Ramon |
| Cousseau, Tiago | Pap, Bálint |
| Cruz, Sandra | Pape, Florian |
| da Silva, Leonardo Rosa Ribeiro | Paszkowski, Maciej |
| Dang, Phuoc Vinh | Peña-Parás, Laura |
| Dardalis, Dimitrios | Pettersson, Anders |
| Das, Hrishikesh | Piasecki, Adam |
| Delgado, Miguel Ángel | Piltan, Farzin |
| Dixon, David A. | Pleşu, Nicoleta |
| Dolatabadi, Nader | Płodzień, Marcin |
| Drápala, Jaromír | Pomoni, Maria |
| Dulebová, L’udmila | Potanin, Andrei A. |
| Egberts, Philip | Profito, Francisco |
| Eugene, Feldshtein | Qin, Liguo |
| Feizpour, Darja | Rakhadilov, Bauyrzhan |
| Feldshtein, Eugene É | Richert, Maria |
| Forero, Jorge Duarte | Rogowski, Krzysztof |
| Fydrych, Dariusz | Rosenkranz, Andreas |
| Gajic, Dragoljub | Roy, Sougata |
| Garabedian, Nikolay | Ruths, Marina |
| Genovese, Maria Erminia | Saavedra, Jorge H. |
| Georgescu, Constantin | Sakai, Katsuhiko |
| Ghadami, Farzin | Sakharova, Nataliya |
| Gharam, Ahmed | Sakhnevych, Aleksandr |
| Glovnea, Romeo | Salimon, Alexey |
| Gnilitskyi, Iaroslav | Sedlacek, Marko |
| Green, David | Sekiguchi, Yu |
| Grillenberger, Hannes | Seshadri, Ramachandran Chidambaram |
| Grützmacher, Philipp | Shafiee, Abbas |
| Gupta, Munish | Shafiq, Anum |
| Gutnichenko, Oleksandr | Shakhaoath, Md. |
| Gwoździk, Monika | Shalaby, Mohamed |
| Haldhar, Rajesh | Shyu, Shiuh-Hwa |
| Haq, Mir Irfan Ul | Siczek, Krzysztof |
| Hase, Alan | Sivakumar, Poopalasingam |
| He, Xin | Słodki, Bogdan |
| Hegab, Hussien | Snopiński, Przemysław |
| Hong, Sheng | Somers, Anthony |
| Hsu, Chia-Jui | Šperka, Petr |
| Hu, Chengliang | Sukjit, Ekarong |
| Hu, Huan | Suleiman, Rami K. |
| Hu, Ming | Sun, Yunyun |
| Huang, Ming | Suyama, Daniel Iwao |
| Huseien, Ghasan Fahim | Sveda, Maria |
| Ivanova, Dimka I. | Svoboda, Petr |
| Jamil, Muhammad Ahmad | Taha-Tijerina, Jaime |
| Jaszak, Przemysław | Taura, Hiroo |
| Jeng, Yeau-Ren | Taylor, Robert Ian |
| Jian, Shunyi | Thangavel, Gurunathan |
| Jimenez Ballesta, Ana Eva | Tohyama, Mamoru |
| Joanna, Borowiecka-Jamrozek | Tomków, Jacek |
| Johnson, David | Tongsri, Ruangdaj |
| Joshi, Sameehan S. | Toth, Frantisek |
| Kasperski, Jacek | Tran, Bach |
| Kazama, Toshiharu | Trausmuth, Andreas |
| Khan, Polina | Van Anh, Nguyen |
| Koenig, Florian | Vasconcelos, Beatriz |
| Kordijazi, Amir | Venner, C.H. |
| Kovaleva, Marina | Vladimir, Kodnyanko |
| Kozdrach, Rafał | Vuchkov, Todor |
| Kuhn, Erik | Walvekar, Aditya |
| Kumar, Rajesh | Welle, Alexander |
| Kurdi, Abdulaziz | Westerberg, Lars-Göran |
| Lang, Andrej | Wieckhorst, Patrick |
| Lemanowicz, Marcin | Williams, John |
| Li, Changhe | Wodtke, Michal |
| Li, Jiusheng | Wolking, Sebastian |
| Li, Qiang | Woś, Paweł |
| Li, Weimin | Xing, Kanglin |
| Lin, Weifeng | Yahiaoui, Malik |
| Liu, Haichao | Zahorulko, Andriy |
| Liu, Heli | Zhang, Chaomin |
| Lohmus, Rynno | Zhao, Jingyi |
| Ma, Chi | Zmarzły, Paweł |
| Makkonen, Lasse |
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