I Had to Use Engine Flush Again

[88GreenVN]

After changing the oil in the V8 a few weeks ago (as the oil light was staying on for a second or 2 on startup) I was sad to see the oil light STILL staying on.

It was painfull to see this light each morning flicker at me and the engine making a bloob bloob bloob sound until the oil presser was up to normal.

Most unhappy.

So off to the local car bits place to get the dreaded engine flush that I've been told not to use. Wacked a tube of goo in and then changed the oil again.

Next morining oil pressure up instantly and no horrible "I've got a problem" bloob bloob bloob sound.

Now this tells me that I have very little tollerance somewhere in the oil system and it gets blocked very easy. I dont wish to take the motor out and do a clean as that just gets expensive when you start to add up all the bits needed plus the time off the road.....

Could it be a dodgy lifter or the oil pump. Can the oil pump block up/be cleaned with out removing the engine? I've not worked on the V8's for 20 years or more as the only one I did anything to was my VB 253 (Chris Milton rebuild)!

I can keep using engine flush before each change knowing I'll need to do something about it. If I tell the wife I've got to take the engine out it'll be curtins for the VN. So thats off the menu. Not going to happen.

So engine flush it will be

[Emackulation]

Engine flush FTW if you ask me, ive only ever seen the good sides.

[Boonz]

its more than likely the oil pickup is blocked as the inlet is only about as big as a ten cent piece and the mesh gets blocked very easily. could be as simple as dropping the sump, giving it a good clean, giving the pickup a clean and off you go again

[vnv8driver]

^ most likely the pickup, and the engine oil flush probably cleaned it out as well... you can be unlucky though and block off the pickup ( which is about 3 cm diameter) if the motor really dirty.. the noise your explaining sounds like lifter noise though? is it a clicking/ticking noise?

[88GreenVN]

^ most likely the pickup, and the engine oil flush probably cleaned it out as well... you can be unlucky though and block off the pickup ( which is about 3 cm diameter) if the motor really dirty.. the noise your explaining sounds like lifter noise though? is it a clicking/ticking noise?

The lifters are quiet when running. The sound is a low sound "Bloob" sound so did not suspect the lifters at all.

So pick up it could be.

[88GreenVN]

its more than likely the oil pickup is blocked as the inlet is only about as big as a ten cent piece and the mesh gets blocked very easily. could be as simple as dropping the sump, giving it a good clean, giving the pickup a clean and off you go again

Can this be done without taking the engine out?

[vnv8driver]

you need to jack the motor up a bit to get the sump off, it can be done in the car but its a pain in the arse.

[88GreenVN]

you need to jack the motor up a bit to get the sump off, it can be done in the car but its a pain in the arse.

Sounds like a visit to the local wreckes to use their hoist. Cook em a BBQ while they fiddle with the car. (I get good discounts for acting like a cook for an hour) Bonus is I get lunch too

[vnv8driver]

lol, they would know how to do it down there anyway, good luck.

[88GreenVN]

One more question - could using engine flush (in say 1 weeks time) is it likely to clean more sludge way from the pickup - before it builds up with 5000kms put on the oil?

[vnv8driver]

i cant say for sure, could make it better or could make it worse... i CAN guarantee that one of the 2 will happen.

[aussieghostrider]

hmmm When I start my car up in the morning I get the oil engine light on for a second then goes but engine sounds fine.

mines a v6 thats never needed an oil flush as i change the oil every 5000kms since the car rolled out of factory when my parents bought it well I thought sludge and **** in engine comes from changing oil once a year or similar ?



could it be that its WINTER <-- ??? and you engines cold lol

or this happens even if you stop engine for few minutes and start again ?

if your sumps full of crap and your oil pump has to work harder which I guess would stuff it all...

Im having other problems with my car since im driving it everday 35km's to work and home each day is takin its toll heheh

but what im I to do .. sell my car for peanuts then buy someone elses problemed car ??? this is why Im still throwing $$$ at my car to keep it in new condition.

when petrol hits $2 a litre then im getting a R1 honda or sumfin hehehhe

[immortality]

a modern style flush shoulde't hurt the engine

[greenfoam]

I used flush in mine each oil change for the last couple years, I had to since my oil light would come on at some very unhappy times when I fist got the car and there was a huuuuuuuge amount of sludge in the engine. I have it pretty much sorted now but it took a while. It's still not clean enough for me to trust running a diesel oil with heaps of detergents in it but that day will arrive sooner or later for the big final clean up :P

[bradcad]

Use an oil rated C_ as well as S_ (ie a diesel and petrol rated oil. There are plenty around). Over time will do the same thing as the engine flush.

[88GreenVN]

hmmm When I start my car up in the morning I get the oil engine light on for a second then goes but engine sounds fine.

mines a v6 thats never needed an oil flush as i change the oil every 5000kms since the car rolled out of factory when my parents bought it well I thought sludge and **** in engine comes from changing oil once a year or similar ?



could it be that its WINTER <-- ??? and you engines cold lol

or this happens even if you stop engine for few minutes and start again ?

if your sumps full of crap and your oil pump has to work harder which I guess would stuff it all...

Im having other problems with my car since im driving it everday 35km's to work and home each day is takin its toll heheh

but what im I to do .. sell my car for peanuts then buy someone elses problemed car ??? this is why Im still throwing $$$ at my car to keep it in new condition.

when petrol hits $2 a litre then im getting a R1 honda or sumfin hehehhe

I dont think the V6 has the same oil pickup issue of the V8. My V6's will get lifter clatter on startup when the oil has had it.

The V8 starts fine once hot no problem. I'd drive to work 3 kms and the car would sit still all daya and come 4:00pm knock off time the oil light would stay on for a second or 2.

Now that I have run a Wynns flush through and done an oil change, car runs fine.

So some people say no to flush - but for now the V8 gets a flush if the oil light stays on - even for a second - it gives me the shivers. I've seen what happens to a car without oil pressure. BANG. with bits n peices all over the place.

[Shounak]

when petrol hits $2 a litre then im getting a R1 honda or sumfin hehehhe

R1's are not economical. A Hyundai Getz is more economical than an R1.

Plus, the way they test R1's for fuel efficiency is not the way most people ride them. The best commuter is always a naked 250-400. But for cheap speed, of course the R1.

Where else can you do 0-100 in less than 3 seconds for less than 20 grand.

Btw, Yamaha's an R1. Honda have the CBR's. All beatiful bike, as are the Gixxers and Kwaka's.

[Dayvo]

Ok this might sound stupid but might be worth a try . Diesel is a good degreaser . Maybe of you drain your sump and fill it up with diesel so it is over the oil pick up and let it sit overnight then drain it out . might be worth a try , easier than pulling the sump off

[vxcalais_01]

I used flush in mine each oil change for the last couple years, I had to since my oil light would come on at some very unhappy times when I fist got the car and there was a huuuuuuuge amount of sludge in the engine. I have it pretty much sorted now but it took a while. It's still not clean enough for me to trust running a diesel oil with heaps of detergents in it but that day will arrive sooner or later for the big final clean up :P

Greenfoam, a Diesel oil is no where near as strong as a Engine oil flush. If your oil has a S rating as well as a C rating, this mean it is a diesel oil as well. But the higher the diesel rating the better Ci4 etc. I try to use a diesel oil every 3rd change, or an engine oil with a high diesel rating. Teh diesel oil is more subtle in cleaning. Run it for up to 5000 if you like. The best ones to use are Mobil Delvac 15W-40(a very good all round oil) Repco Diesel which is a few dollars cheaper but the same as the Delvac. They are both SL rated as well. Shell Rotella is meant to be a top quality diesel but i think its very strong and may not carry a high S rating. Nulon Diesel Oil is good as well and i have used it a few times too.

I have never needed and been brave enough to use a oil flush, i always imagine it willl leave some behind screwing up the new oil stopping the additives from bonding to the surfaces etc. The flush is basically Kero isnt it ?

[vnv8driver]

Ok this might sound stupid but might be worth a try . Diesel is a good degreaser . Maybe of you drain your sump and fill it up with diesel so it is over the oil pick up and let it sit overnight then drain it out . might be worth a try , easier than pulling the sump off

Go right ahead, people have been doing it for years... but dont completely fill up, just put around 400ml's in your oil and start the car for 10 minutes or so, then drain it.. if your really keen, i now a bloke that dumps the old oil, fills up with new oil and diesel, dumps it, then fills back up again!

[bradcad]

The diesel mix works well

[greenfoam]

Greenfoam, a Diesel oil is no where near as strong as a Engine oil flush. If your oil has a S rating as well as a C rating, this mean it is a diesel oil as well. But the higher the diesel rating the better Ci4 etc. I try to use a diesel oil every 3rd change, or an engine oil with a high diesel rating. Teh diesel oil is more subtle in cleaning. Run it for up to 5000 if you like. The best ones to use are Mobil Delvac 15W-40(a very good all round oil) Repco Diesel which is a few dollars cheaper but the same as the Delvac. They are both SL rated as well. Shell Rotella is meant to be a top quality diesel but i think its very strong and may not carry a high S rating. Nulon Diesel Oil is good as well and i have used it a few times too.

I have never needed and been brave enough to use a oil flush, i always imagine it willl leave some behind screwing up the new oil stopping the additives from bonding to the surfaces etc. The flush is basically Kero isnt it ?

Yeah the engine flush is just kero or diesel or something similar. I've only used it just before I drop the oil (idling for 10 minutes) but it's never done anything for actual sludge removal, but it does clean the areas under pressure like the lifters and I assume the pickup . Mobil Delvac Is what I want to use it in when I'm finally game enough to slowly get rid of all the sludge in the engine but since my engine has an EXTREME sludge issue I'm a little pananoid about large sections of it falling off all at once. Although I have manually removed it from the valley there will still be some on the bottom of the block for sure

[vxcalais_01]

Foam, there are a few good engien cleaners, LiquiMoly having one of the best i seen. But like i said, a diesel spec oil will do it more subtly and better stop the new stuff from forming. It is designed for max soot control. Look at the Shell Range of oils, they are one of the best for engine cleaning. Any good engine oil with good base oils will also reduce sludge.

[peter65]

hi guys... once more for the idiots: To do a subtle engine flush, add 400ml diesel fuel to the old oil... run it for 10 mins then dump the lot, and refill with clean (car engine) oil? my vp has about 300kkm on it - doesnt leak or burn oil between 5000km services.

[workedvq355]

HI GUYS I HAVE A VQ STROKER AND GOT PICS IN ME PROFILE HAVE A LOOK ANYWAY I NEED TO KNOW ABOUT A MYTH IS IT TRUE TO REMOVE OLD AND STUCK OIL IN THE MOTOR YOU CAN USE 5 LITRES OF DIESEL IN THE MOTOR AND RUN IT FOR A FEW MINUTES AND THEN REPLACE THE FUEL FILTER AND OIL AND THEN DO A SERVICE ON IT FULLY???AS MY VQ HAS NEVER HAD A ENGINE FLUSH B4 IF NOT THEN WHATS THE BEST WAY TO DO AN ENGINE FLUSH ?ON A V8 VQ AND WILL THE CAR PERFORM LIKE NEW AFTER THE DEISEL DONE IN THE MOTOR!??