RE: L20b oil

[Terry Rudd]

When I said it unsuitable I didn't mean it was no good as such, it just gets burnt and as you say provides very little oil pressure when hot below 2500 rpm - basically synthetic oils in older engines are a waist of money, as straight GTX will service the L20B engine in street trim for it's life cycle with minimal fuss or expense. Adding a Turbo is a bit different, but the same principals apply when it comes to lubrication, a 2 valve older style engine with a turbo will run for ever on an oil like PENNZOIL® PZL TURBO® MOTOR OIL or Penrite HPR50 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of andrew smith Sent: Thursday, 27 March 2003 11:09 PM To: [EMAIL PROTECTED] Subject: Re: L20b oil I used to run castrol 20/50 synthetic i my turbo L series mainly because of the turbo. I pulled the motor down after 60,000 hard miles running up to 25psi and being constantly reved to over 7000rpm.The crank,bearings,camshaft,rockers were all in perfect condition.At one stage i put some mobil synthetic in but it was to thin and oil pressure come right down when it was hot. Terry Rudd wrote: Dang it, I missed a critical "not" in this sentence, it should have read: Synthetic oils are "not" all that suitable for the L series -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Terry Rudd Sent: Thursday, 27 March 2003 7:16 PM To: [EMAIL PROTECTED] Subject: RE: L20b oil   Rick,If it's only used on the street and the occasional trip in the country and it's a bog stock to medium warm L20B and/or it's a high mileage unit with worn valve guides but good seals then in my humble opinion you can't go past Castrol GTX (i.e. the original blend). GTX2, Valvoline XLD etc are OK but they thin out and break down in the second half of the change cycle. GTX will stay good up till around 80% cycle in a warn L series engine. If some of my conditions don't apply eg you hill climb or autox etc then you're looking at a different grade and quality of oil, probably a single grade would be more suitable eg Penrite 30. Synthetic oils are [Terry Rudd] not all that suitable for the L series, although some ppl have good results from Shell Helix.Heath mentioned BP Coarse + - good oil that and also very suitable for the L20B, in fact it's one of the few "petrol vending company" type oil products I've ever used in 30+ years of motoring that's done the job to my satisfaction. --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------