I have been reading on the forum about getting rid of varnish.
Some people say there is no way to get rid of it, others say things like MMO or Auto RX can get rid of it.
A lot of people say it does no harm, however I have read that varnish on valve stems can do harm to the valve stem seals causing oil burn.
My questions:
1. Is there any evidence that there is an additive to get rid of varnish?
2. Is there any truth about varnish degrading valve seals?
Some people say there is no way to get rid of it, others say things like MMO or Auto RX can get rid of it.
A lot of people say it does no harm, however I have read that varnish on valve stems can do harm to the valve stem seals causing oil burn.
My questions:
1. Is there any evidence that there is an additive to get rid of varnish?
2. Is there any truth about varnish degrading valve seals?