Esso LT 71141 also know as LifeGuardFluid5 is a semi synthetic transmission fluid specially formulated for use in ZF five speed transmission units, although it is also required for the ZF4HP20 transmission. All ZF units requiring Esso LT 71141 can be identified by the colour of the ID tag, which is green. Please note that this fluid is not suitable for ZF six speed units which require LifeGuardFluid6 or LifeGuardFluid6 Plus.

It is becoming increasingly important to use the correct grade of oil in late model transmissions as failure to do so can result in numerous shift and torque converter related problems with eventual failure of the unit.

ZF’s response to using alternative fluids is quite clear, they say the design specification of these units require the use of Esso LT 71141. There is no alternative or equivalent oil, Esso is the only supplier of LT 71141. The transmissions are not designed to run on any other fluid and if installed you run the risk of premature failure. The transmissions are equipped with sophisticated torque converter lockup control (TCC) systems and the correct oil specification is critical to their function and operation. One of the main functions of the oil is to provide the correct coefficient of friction and cooling of the torque converter lockup lining during regulated slip conditions. The longevity of the lockup lining could be adversely affected by the use of the incorrect grade of fluid and in most cases deterioration in shift quality and lockup engagement is also experienced.

With this in mind it would seem unwise to supplement this oil with any other, as you could lay yourselves open to warranty claims upon any subsequent failure of the transmission.

Esso LT 71141 is an extremely well specified fluid and many of our customers have used it with success in other transmissions requiring high quality semi synthetic fluids such as DP0 and JF506E, a case in point is the Jaguar X-Type fitted with the JF506E transmission, if after rebuild these units are not filled with the recommended fluid, the oil pumps are often very noisy, sometimes to the extent that imminent failure is expected. On a couple of occasions customers have told us that they have drained as much fluid from the transmission and converter as possible, refilled it with Esso LT71141 and hey presto all is quiet.

Although we would always advise using the oil grade recommended by the manufacturer, it does seem that if you are unable for any reason to use the correct grade, you may find that Esso Lt 71141 will fill your needs for a premium quality ATF.

Esso LT 71141 (20 Litre Canister) Our Part No. OIL.51
Esso LT 71141 (208 Litre Drum) Our Part No. OIL.52

OEM Repair Manuals

U140E Toyota/Lexus
U140F Toyota/Lexus
U240E Toyota

ATSG Repair Manuals & Handbooks

6L80E Manual
JF506E Manual
JF506E Update Handbook
4T65E Update Handbook

The new Bench Buddy™ will save time and money with the latest patent pending simple solution from Superior. Impregnated with a special super fine abrasive, Bench Buddy™ brushes easily remove small burrs and polish the inside of a valve bore with virtually no enlargement of the bore diameter itself.

• Improves the surface finish of a bore by up to 50%
• Restores smooth valve operation in seconds
• Services bores from 1/4” to 1” (6mm to 25mm)

With the Bench Buddy™ you can use valve bodies that in the past may have been questionable. No workbench should be without a Bench Buddy™

We are able to supply parts for most American built manual transmissions, as well as most of the popular front and rear axle units.

Call or email our sales team for more for more information.

Just a reminder for any of you who may have missed this in our March newsletter. We are able to offer you own core remanufactured oil pump assemblies for the 5L40E. These are machined so that all working surfaces are brought back to original specification and all relative face heights are maintained. Please note that the units are supplied less pump rotor assemblies, which are available separately under
Part No. 4L60E.PUM02 if required.

These units can be turned around in a similar manner to O.C.R. Torque Converters, usually two to three days.

We now stock a selection of software, hardware and electrical items for this unit, including overhaul kits, drive belts and torque converters, which are a common failure item.

For details please view our online catalogue
or call our sales team on one of the telephone numbers provided on our contacts page.

We are now able to supply direct from ZF, remanufactured 6HP26 units for Jaguar Cars. These units come pre-filled with transmission fluid and the software is ready programmed for your vehicle.

All we require is the following information:
Transmission code, Vin number, Vehicle type, Engine size and Registration number.

These Bearings are a common failure on the above units and often deposit fi ne metal particles throughout the system, resulting in shift problems due to contamination of the solenoids.

Left Hand Part No. HON4.BE26
Right Hand Part No. HON4.BE27