Gt-40 oil leak

[Airnautique1999]

So…we replaced the long motor before the service and there was a alternative sump plug that’s was not plugged. Filled that in with a blank and now no issues.

[JayG80]

https://pcmengines.com/wp-content/up...e-Oil2.pd_.pdf

[jmo]

I hope the dealer refunded your money at a minimum from “servicing” your boat.

[gary s]

https://pcmengines.com/wp-content/up...e-Oil2.pd_.pdf

You do realize that advisory is for GM based engines that have roller camshafts not 20+ year old engines never tested on those oils right? Those Gen 2 oils were developed to protect the catalytics from contamination.

[JayG80]

You do realize that advisory is for GM based engines that have roller camshafts not 20+ year old engines never tested on those oils right? Those Gen 2 oils were developed to protect the catalytics from contamination.

I read it differently since they specifically call out the Ford GT40. This is a change from the SAE 40 VR1 I used in my GT40. Agree about Dexos is for GM based engines but that isn’t the whole bulletin.

***All model engines not found above, i.e. Ford GT40, 5.7L and 8.1L. These engines should continue to be serviced with the weight and formula oil found below.

Recommended A.P.I. Classification & Viscosity
Above 50 ̊F
SAE 15W-40 “GF-4/SM”

[gary s]

The bulletin does say "continue" which means no change- so technically the bulletin about Dexos does not apply to other engines only the ones with cats. It's an EPA thing.

[sbaker]

Looked through my records and over all my GT40 oil changes (Valvoline VR1 40W), I've averaged ~4.25 quarts over 7 changes. The fluxuation is definitely from a variety of factors when draining (temperature of oil, level ground, patience to let ALL the oil drain out of the line, etc) but I've never put more than 4.5 qts.