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Old 23-07-2018, 08:14 PM   #1
5thFordWA
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Join Date: Dec 2005
Location: Perth WA
Posts: 387
Tech Writer: Recognition for the technical writers of AFF - Issue reason: Writing tech articles 
Default Engine Oil Spec for Longevity?

Mine is a Territory SZ MkII (Petrol), but I guess this is similar for other current models:

The Service book advises engine oil spec "For optimum fuel economy use 5W-30" oil. Has anyone ever asked what oil would be best "For optimum Engine Life"? Just asking. I can't find any other spec in the book for operation in high temp or continuous long distance driving, or even after the engine reaches a higher mileage.

I really think Ford should spell this out and let the owner choose if they would sacrifice a smidgin of economy to obtain a percentage increase in engine life.

Any opinions - or actual knowledge of slightly higher viscosities to be beneficial?
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1967 XR 289 V8 Falcon (1st) - 1973 XLE 250 4spd Cortina (2nd)
1987 XF GL 4.1 Dual-Fuel Falcon (3rd) - 1996 EF 4.0 GLI Falcon (4th)
2003 BA 4.0 LPG Falcon Wagon (5th)
2016 SZ Territory TX 4.0 Petrol (6th & last?)(Sadly, written off)
2004 WRX (Retirement Toy)

Last edited by 5thFordWA; 11-08-2019 at 08:32 PM.
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