Hey everyone,
I am about to start assembly of our engine and was wondering if you guys use Hylosil or RTV and what are the differences. Also with a sump pan gasket are you still using a sealant or just straight gasket, the manual has no mention of a rubber gasket and only Hylosil.

Thanks

 

hylomar was a factory item, a lot of customers use it. I use RTV without issues.

 

Hylosil 101 is a Amine curing RTV silicone sealant.
http://hylomar.com/hylo-wp/wp-conten...y_TDS_2011.pdf

Hylosil 607 is a Oxime curing RTV silicone sealant adhesive
http://hylomar.com/hylo-wp/wp-conten...07_issue_6.pdf

Hylomar universal blue is a non-setting gasket sealant:
http://hylomar.com/hylo-wp/wp-conten...ue_Issue_6.pdf

See the next post for where LR says to use them.

 

I got this form another site:

STC50550: Loctite 5900
STC50551: Terostat 8586
STC50552: Loctite 243
STC50554: Loctite 648
STC3811: Hylomar 101 (Amine curing RTV silicone sealant - engineering grade)
STC4404: Hylomar 607 (Oxime curing RTV silicone sealant adhesive)
STC4600: Hylomar 3400 (Permatex Anaerobic Gasket Maker or Loctite 518)

NOTE: This is the current list of sealant recommendations from Land Rover's Topix website (accessed May 2013). This information supersedes the sealants recommended in the CD version of RAVE.
Sealants
The following table lists those sealants which are used during repair/overhaul procedures covered in this manual; it is essential that the sealant specified for a particular procedure is used at all times.

V8 Engine
Sump gasket to cylinder block - STC 50550
Clutch/torque converter housing to cylinder block - Upper 4 bolts - STC 50552
'V' grooves at end of cylinder head - Inlet manifold gasket - STC 50550
Cruciform seal ends - STC 50550
Dipstick tube - STC 50554
Timing cover bolts - STC 50552

Engine Management System - V8
Engine coolant temperature (ECT) sensor threads - STC 50552

Manifolds and Exhaust System - V8
'V' grooves at end of cylinder head - Inlet manifold gasket - STC 50550

Manual Gearbox - R380
Gear selector housing - STC 50550
Selector housing bolts - STC 50552
Input shaft oil seal housing - STC 50550
Input shaft oil seal housing bolts - STC 50552
Reverse inhibitor shaft threads - STC 50552
Gate plate bolts - STC 50552
Gear case to extension housing - STC 4404
Extension housing bolts - STC 50552
Gear change lever yoke Allen screw - STC 50552
Gear case to centre plate - STC 4404
Detent plugs - STC 50552
Bias spring adjustment plate bolts - STC 50552

Transfer Box - LT230SE
Bottom cover plate - STC 4600
Bottom cover plate bolts - STC 50552
Front output housing core plug - STC 3811
Transfer box to gear case bolts - Petrol and Diesel engines - STC 50552
Transfer box to gear case studs - Petrol and Diesel engines - STC 50552
Rear cover - STC 4600
Differential warning lamp switch(es) - STC 50552
High/Low selector warning lamp switch - STC 50552
Rear output shaft housing - STC 4600
Rear output shaft housing bolts - STC 50552
High/Low selector fork set screw - STC 50552
Interlock solenoid selector cover - Up to 03 MY - STC 4600
Interlock solenoid circlip - 03 MY onwards - STC 50551
Neutral sensor - STC 50552
Intermediate shaft retaining plate bolt - STC 50552
Side cover - STC 4600
Side cover bolts - STC 50552
Differential lock selector shaft detent plug - STC 50552
Differential lock selector housing bolts - STC 50552
Front output shaft housing - STC 4600
Front output shaft housing bolts - STC 50552
High/Low selector shaft detent plug - STC 50552
Input gear bearing housing - STC 4600
Rear cover stud nut and bolt - STC 50552
High/Low cross shaft housing - STC 4600
High/Low cross shaft housing bolts - STC 50552

Rear Axle and Final Drive
Differential cover to casing - STC 3811
Differential cover to casing bolts - STC 50552
Differential cover to casing - STC 3811

Front axle
Differential cover to casing bolts - STC 50552

Front suspension
Drive shaft to hub - STC 50554

Rear suspension
Drive shaft to hub - STC 50554

Rear suspension
SLS air compressor bolts - STC 50552

 

Generally for seals in the oil or cooling system I use a non-setting or semi-setting sealant. This is on the principle that if bits come loose, they won't block passageways in the system. RTV will block passageways. Maybe this is just paranoia..

I've had a great deal of luck with Permatex Form-a-gasket No 2 sealant (black) for oil and cooling systems, although I have found that it works best with a gasket, it doesn't reliably substitute FOR a gasket.

 

Thanks for all the replys,
Excellent list as well.
Now are you guys using just the rubber sump gasket or gasket with RTV type sealant.
Also the timing cover gasket, gasket alone or with sealant?