it's not wise to continue running a non detergent oil.
non detergent oils are for machines with no oil filter.
detergents suspend particles to be trapped into the oil filter.
low tech gas engine on small lawnmowers,a nd air compressor sumps with no filters get no detergents to keep the particles from being suspended, and rather to let them settle safely and not get into bearings.. etc.
I re-work PLENTY of antique tractors.
I don't care what was in it when i got it.. it gets 15w40 in it afterwards once I'm done, with some very, very limited exceptions.
depending on what the drainings look like, is how drastic a cleaning I do.
if it drains out like tar, then it gets a flush... 4 qts walmart 10w30 and a quart of f-atf fluid, plus a 2.99$ walmart filter... run till well warmed up, then drain.. after that, another new filter and real oil.
if you feel sludge at the bung drain.. i'd encourage you to drop the pan perhaps and clean it.. cost is time and a pan gasket.. also lets you look at the bottom of the engine...
I do similar with the tranny and hyds and rear end sumps.. except they get a flush of diesel and atf, and if they have water in them.. diesel + atf + 90% alcohol...
soundguy
Soundguy,
I can understand the ratio on flushing the engine, but what is the ratio of diesel +atf +90% alcohol in hydraulics? Just curious...
Drained the oil, found no sludge at the plug/screen and could not feel any with my finger on the bottom of the pan. Used 10w30 with a new filter. Thanks for all the discussion on this matter. 8N Nut
Drained the oil, found no sludge at the plug/screen and could not feel any with my finger on the bottom of the pan. Used 10w30 with a new filter. Thanks for all the discussion on this matter. 8N Nut
Some of the engines that came in had animals nesting in the blockStill others look good with good compression with shot bearings and the dippers plugged solid...
Without a filter... all the sludge has to go somewhere if it gets back into suspension.
On my own engines... I wouldn't run detergent till I dropped the pan and removed the valve cover to give everything a thorough cleaning...
The title of this thread is Detergent vs Non Detergent Oil...
Don't see how shop experience resurrection old Ford engines wouldn't be relevant to the discussion...
As mentioned... procedure varied depending upon the presence of oil filtration
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the topic is d/v/nd for his mentioned, ford NAA, which has filtration..... thus no variance ??? done deal...
First mention of filter was in post #10...
ALL FORD TRACTORS left the factory with an oil filter!?! That's my point.. the argument was a useless waste of bandwidth!?!? i stated as much starting in post 3, calling for change and new fitler.. then 8, then 14.. etc.. etc..