Если стучит двигатель, присадки виноваты?

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Многие автомобилисты проявляют большой интерес к присадкам, которые используются в двигателе для снижения трения, восстановления изношенных поверхностей и т.д. Мы не могли обойти эту тему стороной. В нашей статье мы постараемся разобраться в присадках и ответим на такие вопросы:

- какого типа бывают присадки;

- если стучит двигатель, присадки помогут или нет;

- какие положительные и негативные последствия могут ждать двигатель автомобиля после использования присадок.

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В современное время рынок автомобильных товаров предлагает всем автолюбителям широкий ассортимент присадок, добавок и прочих активных средств, которые должны продлить жизнь вашего двигателя.

По месту применения все присадки можно разделить на три группы:

- вещества, добавляемые в бензин;

- добавляемые в моторное масло;

- добавляемые в масло трансмиссии.

Бензиновые присадочные смеси – это осушители топлива (удаляющие влагу), очистители внутренних деталей двигателя и антидетонаторы (смеси поднимающие октановое число бензина). Многие автомобилисты пользуются такими присадками, причем делают это довольно успешно. Осушители, без сомнений, полезны, так как они убирают воду, которая имеется практически в любом автомобильном бензобаке. Смеси серии «Октан+», поднимающие октановое число бензина также полезны. Особенно их стоит использовать, если вы заправляетесь на непроверенных заправках. Все, наверное, знают, что при использовании низкооктанового бензина появляется внутренняя детонация, из-за чего мотор очень сильно стучит. Выпускаются и комплексные добавки, которые очищают топливную систему, снимают нагар и удаляют из бензобака скопившуюся там воду. Как показывает опыт, самые качественные добавки выпускаются в Японии.

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Присадки, добавляемые в моторное масло можно разделить на две категории:

1. Добавки на основе минеральных порошков. Такие смеси, при попадании вместе с моторным маслом в двигатель, производят микрошлифовку поверхностей трения мотора. Эксперимент с применением такого типа добавок дал положительные результаты. Был взят изношенный мотор, который сильно стучал. В нем заменили моторное масло и добавили такую присадку, после чего его установили на обкаточный стенд. Результат был положительным: двигатель «ожил», компрессия выровнялась, внутренние поверхности цилиндров сгладились.

2. Присадки с металлоплакирующими составами. В состав таких присадок входят мягкие металлы (в ионном виде или в виде мелкодисперсных порошков). При попадании в мотор эти добавки образуют на стенках плакирующий слой, который залечивает имеющиеся микродефекты. Благодаря такому действию восстанавливаются рабочие характеристики подшипников коленвала и других деталей цилиндропоршневой группы, из-за изношенности которых мотор активно стучит. Большим недостатком этой добавки можно считать малую продолжительность действия восстанавливающего эффекта.

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Что можно сказать еще о присадках? Да, они действительно помогают стареньким моторам прожить еще некоторое время. Благодаря использованию присадок повышается компрессия, убирается детонация. Мотор уже не стучит и работает ровнее. Так говорят многие автомобилисты, и, в принципе, в чём-то они правы. Некоторые же автомобилисты считают, что такие добавки используются только для самоуспокоения владельца машины. Такое мнение тоже имеет право на жизнь, так как не от всех бед помогают добавки.

Кроме того, есть и отрицательные моменты, возникающие при использовании присадок. О них мы далее и поговорим. Присадки, выполненные на основе минеральных порошков, сильно вредят масляным клапанам (они их просто засоряют). Следующий недостаток – большинство внутренних поверхностей двигателя прошли технологическую обработку, которая называется хонингование (на поверхность наносятся мелкие «риски», служащие для задержки масла на этих стенках). Так вот, при использовании присадок с металлоплакирующим слоем, такие «риски» просто выравниваются со всей поверхностью. В результате масло не задерживается на стенках и это приводит к увеличению интенсивности износа. Интересно еще и то, что крупные производители моторных масел и автопроизводители категорически не советуют использовать присадки.

Но как бы то ни было, если вы уже решили применять присадки, то мы советуем вам приобретать только брендовый товар, забудьте о добавках неизвестного происхождения. Приобретая добавку, обязательно изучите состав, там не должно быть воды. Кроме того, перед использованием купленной присадки, прочитайте инструкцию — ни в коем случае нельзя превышать указанную там норму расхода. Будьте внимательны!

Не стоит использовать добавки в новом автомобиле. Вы должны помнить, что все манипуляции со «свежим» авто должны производиться только в авторизированном сервисе, иначе вы можете потерять гарантию.

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