Search Halfords

Looking for Answers about this Product?

Cycling(Q:9972 A:14248)
Motoring(Q:8810 A:12604)
Breakdown & Emergency(Q:104 A:178)
Car Parts(Q:303 A:335)
Car Styling(Q:780 A:994)
Cleaning Products(Q:403 A:896)
Engine Oils & Fluids(Q:1843 A:2353)
Antifreeze(Q:566 A:594)
Engine Oil(Q:324 A:474)
Fuel & Oil Additives(Q:194 A:348)
Gearbox Oil(Q:89 A:113)
Grease(Q:46 A:56)
Power Steering Fluid(Q:430 A:419)
Garage Equipment(Q:1222 A:2304)
Interior Accessories(Q:1010 A:1225)
Motorcycling(Q:359 A:511)
Paints & Body Repairs(Q:1537 A:1928)
Sat Nav & Audio(Q:3343 A:4777)
Shop now at Halfords
or
Choose a Category
Most Recent Questions
Recent Question:
What's the best oil to put in a ford kurgan 2. Diesel 2012
Recent Question:
Can I use this in a Motorbike?
Recent Question:
Oil For A Mazda 3 sport 2ltr 06
Recent Question:
what is the difference between this and the 5W30 peugeot/citroen oil 241641 ?
Questions with Most Recent Answers
Question:
IS THIS OIL SUITABLE FOR A 62 PLATE TRANSPORTER T5 AND CADDY
Question:
how long does engine oil last in years
Question:
halfords 5w/30 fully synthetic oil
Question:
Is this oil suitable for air cooled motorcyles

Customer Questions & Answers for
Castrol GTX 15W40 Oil 4 Litre

The Castrol GTX 15W40 Oil provides superior protection against smoke and leaks.
Customer Questions & Answers:
8 Questions
 | 
8 Answers
Overall Rating:
4 out of 5
4
out of
5
Product Details

Questions & Answers for Castrol Castrol GTX 15W40 Oil 4 Litre

Question
Can I use this oil in a Mitsubishi Pajero 2.8 td
Age Group: 45 - 54
Gender: Female
Attitude to Shopping: Value for Money - I like things to be as cheap as possible
Family: I'm Living with Partner/Spouse - With Children
Attitude to Car Maintenance: Novice
How many cars: More than 3
asked 1 year, 3 months ago
by
Anonymous
 - Mountain Ash
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
Please contact your local Halfords branch with full vehicle details for further clarification, or this can be checked against the specification grade referred to in the vehicle manufacture handbook.
Top 10 Contributor
Top 10 Contributor
answered 1 year, 3 months ago
by
parts
Question
could i use this in a 52 corsa
Age Group: 25 - 34
Gender: Female
Family: I'm Living with Partner/Spouse - With Children
Attitude to Car Maintenance: Novice
How many cars: 1
asked 3 years, 4 months ago
by
shorty09
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
Use our vehicle specific look up for details of which oil you require:
http://www.halfords.com/webapp/wcs/...
If your car is not listed, your local Halfords Superstore may be able to offer further help and advice.
Staff Answer
answered 3 years, 4 months ago
by
HalfordsWebTeam
Question
Using Castrol GTX 15W40 oil in Vauxhall Zafira 1.6
Hi,

Many thanks for replying to my question. My car is a petrol engine, 2004 and has done almost 121,000 miles. I have to top up the oil more than I should. I get an egg size oil deposit overnight and I suspect it also leaks whilst I am driving it.

I have only just become the sole driver of this car so I am going to monitor it more closely than previously and then try taking it to a different mechanic to try to solve the problem once and for all.

Do you think it would be ok to use the Castrol GTX 15W40 in the meantime, instead of the 10W40?

Thank you for your kind assistance to date, it is very much appreciated.
Age Group: 35 - 44
Gender: Female
Attitude to Shopping: Quality Seeker - I'd rather spend a little extra on something if I know its going to last
Attitude to Car Maintenance: Novice
asked 2 years ago
by
Phillipa1
 - South Hams
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
Using the GTX 15W-40 is acceptable, as long as you are doing 10K / 12
month oil changes. The GTX is a more basic oil and wont provide the same
protection as the Magnatec, but in your situation where the car is using
a lot of oil, and you are looking for a short term cheaper oil untill
you get the oil leak fixed it would be acceptable. I would suggest the
GTX 10W-40 rather than the 15W-40 though - especially as winter is
coming and the 10W will offer faster start up protection than the 15W-40
but as they are both the same when at working temperature, you
shouldn't see any increase in consumption. when you have fixed the
engine, revert back to Magnatec for the best performance and protection.
Bear in mind if the car is leaking oil onto the road, this is very
dangerous for other motorists, especially motorcycles in wet weather as
this make the road surface incredibly slippery and contributes to
accidents, so worth fixing the leak ASAP.
Staff Answer
answered 2 years ago
by
HalfordsWebTeam
Question
Can I use this oil in a Vauxhall Zafira 1.6l
I bought this by mistake. Previous oil used in my car was Castrol 10W-40 and when I looked up what oil I should use for my car I discovered it should be either Castrol Edge 5W-40 or Castrol Magnatec 10W-40 A3/B4 but since I have already bought Castrol GTX 15W-40 and my car has suffered from a persistent oil leak for a couple of years (several garages have been unable to fix the problem) can I use this oil anyway as it does say it is suitable for cars with smoke and leak problems?
Age Group: 35 - 44
Gender: Female
Attitude to Shopping: Quality Seeker - I'd rather spend a little extra on something if I know its going to last
Attitude to Car Maintenance: Novice
asked 2 years ago
by
Phillipa1
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
Technically speaking Castrol GTX 15W-40 would be suitable for use in a Zafira (either petrol or diesel variant) before 2005 but after this time Vauxhall would prefer an alternative specification of oil.

I need a little more information about your vehicle eg petrol or diesel; age; mileage etc

I am a little concerned that you say there is an oil leak which is persistent – how much oil is leaking during a standard oil drain interval? If it is a heavy leak surely the source of the leak can be pinpointed? I am surprised a garage has never found this leak if it is significant.

However, if you think there is a leak because of the vehicle using oil then please remember Vauxhall state that oil use of 1 litre of oil per 1,000 Km is normal (which actually is quite a lot of oil).

If the oil is being burnt then this would generally suggest that there is some wear in the engine with blow by of the piston occurring. (Hence the question of age/mileage of the vehicle)

In this last scenario of engine oil getting past the piston rings (blow by) then a move to a thicker viscosity oil may help reduce this, but I would like to check all the answers to the questions above for a fuller picture.
Staff Answer
answered 2 years ago
by
HalfordsWebTeam
Question
will this oil be ok to use in a ford mondeo
p692gdp
Age Group: 25 - 34
Gender: Male
asked 1 year, 11 months ago
by
phil09
 - falkirk
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
Hi, thanks for your interest in Castrol GTX 15W40 Oil 4 Litre. Using the vehicle registration number is the best method to identify the correct oil for your vehicle. Please use the Halfords oil look up tool to find the correct oil for your vehicle. Link to oil look up tool: http://www.halfords.com/webapp/wcs/...
Staff Answer
answered 1 year, 11 months ago
by
HalfordsWebTeam
Question
please could you tell me if this oil is ok for a renualt megane W756 WBP please
Gender: Male
How many cars: 1
asked 1 year, 8 months ago
by
ANDYS
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
yes, this oil will be suitable for your Renault Megane.
Staff Answer
answered 1 year, 8 months ago
by
HalfordsWebTeam
Question
is this suitable for meane diesel
is this oil castrol gtx 15w40 suitable for a megane 1.5dci 07reg with 76000 miles?
asked 1 year, 6 months ago
by
rocketr0b
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
due to the engine variants with FAP = diesel particulate filter within the engine range please contact your local Halfords branch with full vehicle details for further clarification, or this can be checked against the specification grade referred to in the vehicle manufacture handbook.
Top 10 Contributor
Top 10 Contributor
answered 1 year, 6 months ago
by
parts
Question
Would this oil be suitable for a 2002 reg Audi A6, 2Ltr.?
Age Group: 65 & Over
Gender: Male
Attitude to Shopping: Quality Seeker - I'd rather spend a little extra on something if I know its going to last
Family: I'm Living with Partner/Spouse - No Children
Attitude to Car Maintenance: Enthusiast
How many cars: 1
asked 7 months ago
by
All14
 - Stevenage
on Castrol GTX 15W40 Oil 4 Litre
1 answer
Answers
answer 1
This oil would not be suitable for your vehicle, Please visit your local store with the full details of your vehicle where a member from the parts team can assist you with the correct oil for your vehicle.
Top 10 Contributor
Top 10 Contributor
answered 7 months ago
by
fishgut
1 of 1