I agree. You have been using detergent oils all along so the detergent in
synthetics isn't going to make any difference. However if it is still in
good shape at 188.000 miles then why change what you have been using. You
aren't going to get any improvement........


"Steve Bigelow" <stevebigelowXXX@rogers.com> wrote in message
news:XrK0d.306402$UTP.208834@twister01.bloor.is.ne t.cable.rogers.com...
>
> "YoYeahBut" <prodigal@yeahbut.net> wrote in message
> news:a7dba27d.0409111319.4703730e@posting.google.c om...
>> My mehanic claims that synthetics are very high detergent and are bad
>> to start using on old engines. My 87 Accord has 188,000 miles. He
>> said if it had had synthetic in it regularly before 100,000 miles it
>> would be fine. He reccommends using some of that seal swelling high
>> mileage stuff, but I'm hesitant to use anything that would soften the
>> old seals. Also he says the Honda oil filters are probably a waste of
>> money. He says he's not sure, but he knows the US aotomakers charge
>> too much for their filters. Don't filters need to have ratings like
>> engine oils.
>
> Find another mechanic.
>