i would never use flushing oil.if crap is just sat there doing no harm leave well alone and just regular oil changes powerflushing is big in america and wrecks engines, the car makers do not recommend it or will even give warranty if u have had it doneOne of the receipts included with the ex's new car, was an old one for engine work, cleaning sludge out of the top end - with the recommendation to do more frequent oil changes, rather then using flushing oil for fear of the flushing oil doing too good a job and causing too much crap to come loose and block things that shouldn't be blocked.
Not sure how true that is - but it was a fear I had 20 plus years ago when I bought some and read the label, so I have to 20 yr old unopened flushing oil going . . .
Yeah, at £27 + VAT!Do motor factors near you not do flushing oil?
I must confess, I hadn't thought of that, I should have given Ade a callGo talk nicely to the guys in the workshop at somerfords. They might sort you out
Flushing oil is no good for modern engines. Use at your peril.
For flushing use Diesel engine oil to grade CF4 even on a petrol engine. Viscosity not important.
Do not use on anything with a DPF.
Nope, nor filter. It all just congregates in the low point of the sump. Which is why the sump is lying outside drying post-cleaningDoes it have a sludge trap in the crank?
SAE is the viscosityAh, what I failed to mention is that the engine I want to flush out is a 1930's Morris side valve motor that has recently had a minor coolant issue (coolant where it shouldn't be including all over the engine bay and very nicely emulsified in the oil. Sorry! But good advice!
I ended up getting a gallon of SAE 30 from my local (ish) agricultural supplier. Thie bonus being that I can also use it for top-ups as that is the correct oil for the engine.
Thanks to all that have replied, much appreciated.
I see, I would still NOT use flushing oil in the Morris, (an Eight ?) Modern oils, especially diesel, hold all the carp in suspension, so it is drained out during a change.Ah, what I failed to mention is that the engine I want to flush out is a 1930's Morris side valve motor that has recently had a minor coolant issue (coolant where it shouldn't be including all over the engine bay and very nicely emulsified in the oil. Sorry! But good advice!
I ended up getting a gallon of SAE 30 from my local (ish) agricultural supplier. Thie bonus being that I can also use it for top-ups as that is the correct oil for the engine.
Thanks to all that have replied, much appreciated.
I see, I would still NOT use flushing oil in the Morris, (an Eight ?) Modern oils, especially diesel, hold all the carp in suspension, so it is drained out during a change.
Back then, removing the sump and cleaning it out was part of the service regime. Not unusual to find an inch or two of sludge in the bottom. If you disturb it by using flushing oil, thats a big mistake. It would be carried round while the engine is running, and settle to the bottom when stopped. It would stay there too, except the bit around the oil pickup, until it got so bad it would block this. I have got a big 1960s Ford industrial diesel engine here that has been ruined by exactly this.
Oils have come on so much since then, and personally, I would have no qualms about using a modern detergent oil in it, one it is all cleaned up that is.
Here is a couple of photos of my Ford engine.
Sump is supposed to be the same depth all the way through, Three to four inches of sludge in the part to the right. Other part is shallower because of the oil pickup which was blocked solid.
Con rod picture showing what was left of the big end shell, thats the frilly bit
View attachment 398545View attachment 398546View attachment 398547
I am always telling people that on the land rover forums, they are obsessed with semi or syn as an upgrade, slap some mineral in and it will run forever.The misunderstanding that the latest oil is the best for you engine is not true. It killed many a motor in the late 70s and 80s, when they removed most of the ZDDP and added detergents. This cleaned all the gunk off the inside and sent it around the motor. One dead engine
just changed the oil on wifeys car and my pug van . both use 0/30 big ££££ people say use 5/30 but no chance on newish vehicles the oil is thinner and better in winter specialy on a turbo . oil gets round quicker on start up