Oil in coolant reservoir

[Yetti2005]

Hi all, new here and looking for some help. Just found quite a bit of oil in the coolant bottle of my Gen2 Coyote engine. Been told it could be oil cooler rather than head gasket but wondered what similar experience others have had. If it is head gasket (which whenever I have a problem that could be relatively easy or relatively hard I can guarantee it’s always the worst one!… if this was Wheeler Deslets car show Mike Brewer would have accidentally topped up the coolant with engine oil and all would be well). How easy is this to do with the engine in the car as it looks pretty tight to get the cam chain cover and pulleys off, or is it best to remove the engine? I also need pointing in the direction of correct torques and any particular engine specific processes, helpful tips etc. hope this is the right place to post this thread (I’m old and technology scares me!! )

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[Twin Turbo]

Very likely to be your oil cooler........this is not uncommon on the RHD S550.

Are you still under warranty, because it could be a big job, in as much as this has wrecked some engines :(

 

[Twin Turbo]

If you're not under warranty, get it towed to Modurstang.......but DO NOT drive it.

https://www.modurstang.co.uk/

And I wish you luck!

 

[Twin Turbo]

Also, if you're on Facebook, join Simply Mustangs UK. You'll get lots of very good advice and it's a very friendly group

https://www.facebook.com/groups/SimplyMustangsUK

 

[Yetti2005]

Very likely to be your oil cooler........this is not uncommon on the RHD S550.

Are you still under warranty, because it could be a big job, in as much as this has wrecked some engines :(

thanks, no not under warranty and hopefully engine is OK (at least hasn’t been running any differently lately)

 

[Yetti2005]

If you're not under warranty, get it towed to Modurstang.......but DO NOT drive it.

https://www.modurstang.co.uk/
And I wish you luck!

thanks for the advice. Will contact Modurstang. At least they’re not the other side of the country from me so transporting won’t be so bad. I’ll take a look at simply mustangs on FB too

 

[Twin Turbo]

The guys at Modurstang are great and they actually offer a replacement oil cooler system (as do GT101, but they're based in Essex). Finger's crossed your engine is OK.

Two other highly recommended specialists are

Motorsport and Performance (Yorkshire)
https://www.motorsportandperformance.com/

&

Hendy Performance (Eastleigh, South Coast)
https://www.hendy.co.uk/performance/dealers/hampshire/eastleigh/

 

[Yetti2005]

The guys at Modurstang are great and they actually offer a replacement oil cooler system (as do GT101, but they're based in Essex). Finger's crossed your engine is OK.

Two other highly recommended specialists are

Motorsport and Performance (Yorkshire)
https://www.motorsportandperformance.com/

&

Hendy Performance (Eastleigh, South Coast)
https://www.hendy.co.uk/performance/dealers/hampshire/eastleigh/

Really appreciate your advice and pointers to good repairers… I would have had a go myself rather than trust it to any of my local Ford garages!

 

[tdstuart]

You can replace the heads with the engine in the car but will probably need some help lifting the head.

I would also leave the exhaust manifold on if you can, but I am not sure you will be able to. There will also be sensors on the back of the head that you probably wont be able to get till the head is free. I would try to keep the sensors and exhaust manifold connected, and just lift the head off enough to swap the gasket.

Hopefully, it is just the oil cooler as it's a much simpler job.

You do need a special tool to get the oil cooler off. You need a long hex key, I ended up just modifying a hex key socket.

To get the heads off:
1. Take off intake system (air intake, manifold)
2. Take off the front cooling system (tank, hoses, water pump, thermostat) (fans are optional but would give you more clearance)
3. Take off belts and alternator
4. Remove crankshaft pulley
5. Remove valve covers
6. Remove front engine cover
7. Remove crank sprocket, timing chains, and vct solenoids
8. Remove cams
9. Remove heads

 

[raptor17GT]

Hi all, new here and looking for some help. Just found quite a bit of oil in the coolant bottle of my Gen2 Coyote engine. Been told it could be oil cooler rather than head gasket but wondered what similar experience others have had. If it is head gasket (which whenever I have a problem that could be relatively easy or relatively hard I can guarantee it’s always the worst one!… if this was Wheeler Deslets car show Mike Brewer would have accidentally topped up the coolant with engine oil and all would be well). How easy is this to do with the engine in the car as it looks pretty tight to get the cam chain cover and pulleys off, or is it best to remove the engine? I also need pointing in the direction of correct torques and any particular engine specific processes, helpful tips etc. hope this is the right place to post this thread (I’m old and technology scares me!! )

sadly it could easily be a busted engine either way whether head gasket or oil cooler. @Twin Turbo has given excellent advice so hopefully you'll be back on the road soon. I'd advise also if you do go replacement engine, dump that OEM oil cooler in the bin and fit anything else in its place.

 

[Yetti2005]

You can replace the heads with the engine in the car but will probably need some help lifting the head.

I would also leave the exhaust manifold on if you can, but I am not sure you will be able to. There will also be sensors on the back of the head that you probably wont be able to get till the head is free. I would try to keep the sensors and exhaust manifold connected, and just lift the head off enough to swap the gasket.

Hopefully, it is just the oil cooler as it's a much simpler job.

You do need a special tool to get the oil cooler off. You need a long hex key, I ended up just modifying a hex key socket.

To get the heads off:
1. Take off intake system (air intake, manifold)
2. Take off the front cooling system (tank, hoses, water pump, thermostat) (fans are optional but would give you more clearance)
3. Take off belts and alternator
4. Remove crankshaft pulley
5. Remove valve covers
6. Remove front engine cover
7. Remove crank sprocket, timing chains, and vct solenoids
8. Remove cams
9. Remove heads

Thanks, is there any specific tightening order, what are the torques, and I would need to get head off completely to check its flat . Cheers

 

[Yetti2005]

sadly it could easily be a busted engine either way whether head gasket or oil cooler. @Twin Turbo has given excellent advice so hopefully you'll be back on the road soon. I'd advise also if you do go replacement engine, dump that OEM oil cooler in the bin and fit anything else in its place.

fingers crossed

 

[raptor17GT]

If you are doing it yourself you might want to read through the ford TSB, though the dates indicate you shouldn't have had issues there have been my18 with reported failures of the oil cooler.
Thread from external site but I'm sure the TSB is listed here somewhere

https://forum.mustang.org.au/index.php?topic=31242.0

Ford tsb link https://ford.oemdtc.com/2604/oil-leak-from-engine-oil-cooler-right-hand-drive-2016-2017-ford-mustang

 

[Yetti2005]

If you are doing it yourself you might want to read through the ford TSB, though the dates indicate you shouldn't have had issues there have been my18 with reported failures of the oil cooler.
Thread from external site but I'm sure the TSB is listed here somewhere

https://forum.mustang.org.au/index.php?topic=31242.0

Ford tsb link https://ford.oemdtc.com/2604/oil-leak-from-engine-oil-cooler-right-hand-drive-2016-2017-ford-mustang

Thanks mines a 2018 reg but is prefacelift so probably manufactured in 2017

 

[tdstuart]

Thanks, is there any specific tightening order, what are the torques, and I would need to get head off completely to check its flat . Cheers

Ya I can try to get the service docs for the engine. Your car is 2018+?

The hope would be that you can leave the exhaust manifold on the heads when you take the heads out cause getting the manifold off is a real pain.

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