Page 1 of 1
Oil
Posted: Mon May 14, 2018 6:40 pm
by 1stgenWizard
What oil are you using?
I use castol 10w40 half syn, been using the same oil forever.
Re: Oil
Posted: Thu May 17, 2018 9:09 am
by Jefferson
Pends on time of year, hot months I'm with ya on the 10w40, back down to 10w30 as winters can be cold here. Straight up conventional Valvoline.
Re: Oil
Posted: Sun Aug 30, 2026 10:48 pm
by techguru
I've been using Delo 15W-40 in my 1991 GT for the past 15 years.
Re: Oil
Posted: Wed Sep 02, 2026 4:52 am
by 1stgenWizard
techguru wrote: ↑Sun Aug 30, 2026 10:48 pm
I've been using Delo 15W-40 in my 1991 GT for the past 15 years.
yep good stuff, i run rotella 5w40 in are 2nd gen gt's