Liqui Moly 31015563 Engine Protector

The general customer experience with the CeraTec additive for diesel engines seems to be positive. Some customers have reported that the product has resulted in a quieter and more fuel-efficient running of their engines. However, there have been some concerns regarding the packaging and instructions. One customer found the packaging seal broken and the instructions in Russian, which caused some confusion. Another user mentioned a fishy smell upon opening the product, although this did not seem to affect its performance. Additionally, there were comments about having to search online for proper dosage instructions due to the language barrier. Despite these issues, many customers have praised the product for its effectiveness, with some expressing a willingness to purchase it again due to its positive impact on their engine performance. However, some have suggested the need for clearer instructions in languages commonly used in Central and Western Europe.