OIL for 8V GTI/ Valve Stem

[StephenEggo]

Hi guys just wondered what oil to put into my 1991 8v gti. Its done 140,000 now and is currently running on duckhams 10-40 semi sythetic.

The engine does use oil around 1 litre to every 1.5-2k miles. I think the valve stem oil seals are maybe showing signs of wear.

Anyway the car is being serviced on thursday and I am wanting to try a different oil. I was thinkiing along the lines of castrol gtx magnatex 15-40. I heard the vw stuff is pretty good as well but I was thinking that 10-40 maybe a little thin if the car is using oil.

I have also just started to notice shades of blue smoke emitting from the exhaust when the engine is reved when cold. Could this be serious?

Cheers

[cняis]

sounds like valve stem seals

[fused]

There might be an additive to help old seals? otherwise I use cheap halfords oil.... well she drinks so much ! Seems a waste of money to put the good stuff in, I'll put that in after the rebuild! Not long now!

[jaybv6]

I buy Vauxhall's Semi Synth 10w40.  Mainly as I have a trade account at Vauxhall and the oil only costs me £8 as opposed to Halford own which costs nearer £20

[StephenEggo]

would anyone recommend putting 15-40 in opposed to 10-40?

Cheers

[Mart8V]

I use the Synta Silver (VAG stuff) religiously.  Good value from GSF and also a genuine filter with the non-return valve in it.

Does sound as though the oil seals may be on the way- not a huge job but worth doing.

[takethefifth]

would anyone recommend putting 15-40 in opposed to 10-40?

No, i tried it, no difference. The 40 is the viscosity anyways so you would need a 10/50 or 15/50 if you wanted to try a thicker oil.