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Fuels & Lubricants Discussion all about Fuels & Lubricants. synthetic oil, conventional oil, brands, change intervals, diesel grades, gelling and such debated items like that. Non TDI related postings will be moved or removed. This forum is NOT for the discussion of biodiesel and other alternative fuels.

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Old December 20th, 2017, 09:16   #1
Join Date: Dec 2017
Location: Florida
Default Castrol Bio-Synthetic

Hello all,

can anyone tell me if Castrol Edge Bio-Synthetic is an appropriate oil for a diesel engine. I was looking through the specs and I can't see whether it is CG-4 rated or higher or if it is an oil that can be used with a diesel engine. I have been using Castrol Edge Extended Performance 5W30 Full SYN and was on the fence on whether to switch or to stay with what I'm already using.

Chris Sanchez
2001 VW MK4
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Old December 22nd, 2017, 06:47   #2
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Join Date: May 2006
Location: Orillia, Ontario
Fuel Economy: 2003 Jetta 54 Miles per Imperial Gallon, 2005 Passat 40 Miles per Imperial Gallon

Based on the product data sheet I would say it is NOT an appropriate oil for a Diesel Engine. I am not an oil guru so others may feel differently but I would not use this oil in my Diesel car. If using Castrol, I would use... Castrol EDGE Turbo Diesel 5W-40 (VW 502.00/ 505 00/ 505 01) or Castrol EDGE 5W-30 (VW 504 00/ 507 00. Fulfils the requirements of the former VW 503 01 specification)
2014 Touareg "Highline" TDI with R-Line Pkg. 115000km, 2014 Q5 "Technik" TDI 101000km, 2013 Golf SportWagon "Highline" Buyback Taken 161871km, 2003 Jetta Wagon (RIP) 499400km, and 2005 Passat Sedan (SOLD) 108000km.

Last edited by ksa63; December 22nd, 2017 at 06:56.
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Old December 22nd, 2017, 20:07   #3
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Join Date: Oct 2003
Location: McFadden's Ford, Stones River NMP M'boro, TN
TDI(s): 02 Golf GLS
Fuel Economy: around 50 mpg

I would definitely use a 5w40 in a Florida ALH.
2002 gls golf

Originally Posted by foxracer1 View Post
Wars are fought over religion, money, land, and brand of injectors for a TDI
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