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********We would like to take a moment of your time in thanking everyone that as helped us keep this forum going, from donations, sponsorship, hands on help and all the members that have used us, as it was built to help follow owners keep their passion on the roads, as we step into 2020 we hope all your hopes and dreams come true, we need to heart felt thank the owners that have given donations to help us carry on already so early into the new year and believing in what we are trying to do for everyone , it is also with great pride we thank AUTOLINKMX5 Mr Andrew Stott for sponsoring us again for this year, Andrew is not only a business but a very passionate petrol head and is always there to help fellow members in need regardless, the monthly discount code is always updated every end of the month with a fresh code so jump on getting it cheaper from us and Andrew , looking into this year we are hoping to arrange mazdamenders tech days/weekends this year to become the norm to meet and get our hands dirty all together, drive her like you stole her and weld that smile in place. *********
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Mk2.5 1.8 VVT

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Location: Auchenblae, Aberdeenshire

Mk2.5 1.8 VVT

Postby drumtochty » Mon Mar 06, 2017 5:22 pm

Just changed the oil on a 1.8 Mk2.5 and without thinking about it used Castrol GTX 10W/40.

Not an issue lubrication wise but most recommendations are for 5W/30 to run the VVT kit in the head.

I do not think it will be an issue but has anyone had a problem with the VVT kit with 10W/40 GTX.
1999 Mk2 Silver
2008 Mk3 Copper Red gone
2018 Mk4 GT+ Red
Drumtochty Glen, Auchenblae, Aberdeenshire
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Re: Mk2.5 1.8 VVT

Postby Lazza » Mon Mar 06, 2017 8:09 pm

5w-30 isn't recommended for Mk2.5 VVT engine, only Mk3+. 5w-30 is a low resistance oil and needs an engine designed for it.
The VVT engine is recommended to have a full synthetic 10w-40 to 0w-40. I always use Mobil 1 0w-40.
I don't think the oil you have used will be a problem at all though, just not quite perfect so might not last as long.

2001 Mk2.5 MX5 1.8 Sport
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